diff --git a/forms/module.php b/forms/module.php
index f2ba08d..0a3b723 100644
--- a/forms/module.php
+++ b/forms/module.php
@@ -152,7 +152,7 @@
 				break;
 		}
 
-	if ($_REQUEST['ajax'])
-		exit((string)$response);
+	if ($_REQUEST['ajax'] ?? false)
+    exit((string)$response);
 }
 ?>
\ No newline at end of file
diff --git a/forms/templates/form_edit.tpl b/forms/templates/form_edit.tpl
index 1668815..3708712 100644
--- a/forms/templates/form_edit.tpl
+++ b/forms/templates/form_edit.tpl
@@ -90,8 +90,8 @@
 $fid = parseInt('{$fid}');
 $sess = '{$sess}';
 $smarty = new Array;
-$smarty['start_alert'] = '{$alert.text}';
-$smarty['start_alert_theme'] = '{$alert.theme}';
+$smarty['start_alert'] = '{$alert.text|default:''}';
+$smarty['start_alert_theme'] = '{$alert.theme|default:''}';
 $smarty['_email_accept'] = '{#email_accept#}';
 $smarty['_email_error'] = '{#email_error#}';
 $smarty['tpl_dir'] = '{$tpl_dir}';
@@ -134,7 +134,7 @@ $smarty['form_title_error_title'] = '{#form_title_error_title#}';
 				<tr class="noborder">
 					<td>{#title#}:</td>
 					<td>
-						<input type="text" name="title" id="form_title" value="{$form.title|escape}" class="mousetrap" placeholder="{#title#}" size="40" {if !$fid}autofocus{/if} />
+						<input type="text" name="title" id="form_title" value="{$form.title|default:''|escape}" class="mousetrap" placeholder="{#title#}" size="40" {if !$fid}autofocus{/if} />
 					</td>
 				</tr>
 				<tr>
@@ -146,9 +146,9 @@ $smarty['form_title_error_title'] = '{#form_title_error_title#}';
 					</td>
 					<td>
 						<div class="pr12" style="display: table;">
-						<input type="text" name="alias" id="form_alias" value="{$form.alias|escape}" class="mousetrap" data-accept="{#alias_accept#}" data-error-syn="{#alias_er_syn#}" data-error-exists="{#alias_er_exists#}" placeholder="{#alias#}" maxlength="20" size="40" />
+						<input type="text" name="alias" id="form_alias" value="{$form.alias|default:''|escape}" class="mousetrap" data-accept="{#alias_accept#}" data-error-syn="{#alias_er_syn#}" data-error-exists="{#alias_er_exists#}" placeholder="{#alias#}" maxlength="20" size="40" />
 						<input type="text" id="form_tag_{$fid}" value="[mod_forms:{if $fid && $form.alias}{$form.alias}{elseif $fid}{$fid}{/if}]" readonly size="40" class="mousetrap" />
-                        <a style="text-align: center; padding: 5px 3px 4px 3px;" class="whiteBtn copyBtn topDir" href="javascript:void(0);" data-clipboard-action="copy" data-clipboard-target="#form_tag_{$form.id}" title="{#cn_copy_to_clipboard#}">
+                       <a style="text-align: center; padding: 5px 3px 4px 3px;" class="whiteBtn copyBtn topDir" href="javascript:void(0);" data-clipboard-action="copy" data-clipboard-target="#form_tag_{$form.id|default:'0'}" title="{#cn_copy_to_clipboard#}">
 					    <img style="margin-top: -3px; position: relative; top: 4px; padding: 0 3px;" class="clippy" src="{$ABS_PATH}admin/templates/images/clippy.svg" width="13"></a>
 				        </div>
 					</td>
@@ -161,7 +161,7 @@ $smarty['form_title_error_title'] = '{#form_title_error_title#}';
 						</div>
 					</td>
 					<td>
-						<input type="checkbox" name="protection" value="1" {if $form.protection!=='0'}checked="checked"{/if} class="mousetrap"/>
+						<input type="checkbox" name="protection" value="1" {if $form.protection|default:'1' !== '0'}checked="checked"{/if} class="mousetrap"/>
 					</td>
 				</tr>
 				{if !$fid}
diff --git a/forms/templates/form_fields.tpl b/forms/templates/form_fields.tpl
index a0dca12..a371a61 100644
--- a/forms/templates/form_fields.tpl
+++ b/forms/templates/form_fields.tpl
@@ -56,8 +56,8 @@
 				{if $field.main && $field.title=='receivers'}
 					{foreach from=$field.setting item=receiver name=receivers}
 					<div class="add_wrap">
-						<input type="text" name="fields[{$field.id}][setting][{$smarty.foreach.receivers.index}][email]" value="{$receiver.email|escape}" placeholder="Email" size="20" class="mousetrap email form_field_switch" />
-						<input type="text" name="fields[{$field.id}][setting][{$smarty.foreach.receivers.index}][name]" value="{$receiver.name|escape}" placeholder="{#name#}" size="20" class="mousetrap form_field_switch" />
+						<input type="text" name="fields[{$field.id}][setting][{$smarty.foreach.receivers.index}][email]" value="{$receiver.email|default:''|escape}" placeholder="Email" size="20" class="mousetrap email form_field_switch" />
+						<input type="text" name="fields[{$field.id}][setting][{$smarty.foreach.receivers.index}][name]" value="{$receiver.name|default:''|escape}" placeholder="{#name#}" size="20" class="mousetrap form_field_switch" />
 						{if $smarty.foreach.receivers.index == 0}
 						<input type="button" value="+" class="btn basicBtn smallBtn addParentBtn mousetrap form_field_switch" data-content='<div class="add_wrap"><input type="text" class="mousetrap email form_field_switch" name="fields[{$field.id}][setting][%count%][email]" placeholder="Email" size="20"/> <input class="mousetrap form_field_switch" type="text" name="fields[{$field.id}][setting][%count%][name]" placeholder="{#name#}" size="20"/> <input type="button" value="&times;" class="btn redBtn smallBtn delParentBtn form_field_switch" data-target="div"></div>' data-target="td" data-count="{$field.setting|@count}">
 						{else}
@@ -185,11 +185,11 @@
 						</script>
 					{/if}
 				{elseif ($field.type=='select' || $field.type=='multiselect')}
-					{if !$field.setting_empty}
+					{if !$field.setting_empty|default:0}
 					<select style="width:300px" name="fields[{$field.id}][defaultval]{if $field.type=='multiselect'}[]{/if}" {if $field.type=='multiselect'}multiple="multiple" size="{$field.setting|@count}" style="width:100%"{/if} class="mousetrap">
 						{foreach from=$field.setting item=item name=select}
 							{if $field.main && $field.title=='receivers'}
-							<option value="{$smarty.foreach.select.index}" {if $smarty.foreach.select.index==$field.defaultval}selected="selected"{/if}>{$item.name|escape}</option>
+							<option value="{$smarty.foreach.select.index}" {if $smarty.foreach.select.index==$field.defaultval}selected="selected"{/if}>{$item.name|default:''|escape}</option>
 							{else}
 							<option value="{$smarty.foreach.select.index}" {if ($field.type=='select' && $smarty.foreach.select.index==$field.defaultval) || ($field.type=='multiselect' && $smarty.foreach.select.index|in_array:$field.defaultval)}selected="selected"{/if}>{$item|escape}</option>
 							{/if}
@@ -205,7 +205,7 @@
 			</td>
 			<td align="center">
 				<a class="topleftDir icon_sprite ico_template form_field_tpl_btn" href="javascript:void(0);" title="{#fld_tpl_toggle#}"></a>
-				<input type="hidden" class="form_field_tpl_input" name="field_tpl_open[{$field.id}]" value="{if $field_tpl_open[$field_id]}1{else}0{/if}">
+				<input type="hidden" class="form_field_tpl_input" name="field_tpl_open[{$field.id}]" value="{if isset($field_tpl_open[$field_id]) && $field_tpl_open[$field_id]}1{else}0{/if}">
 			</td>
 			<td align="center">
 				{if !$field.main}
@@ -213,7 +213,7 @@
 				{/if}
 			</td>
 		</tr>
-		<tr class="form_field_tpl_tr {if !$field_tpl_open[$field_id]}hide{/if}">
+		<tr class="form_field_tpl_tr {if !isset($field_tpl_open[$field_id]) || !$field_tpl_open[$field_id]}hide{/if}">
 			<td colspan="8">
 				<div class="col-half">
     			<h6 ><span style="padding-right: 20px;">{#attributes#}</span> <img style="margin-top: -2px; position: relative; top: 0pt; padding: 0 3px;" class="clippy" src="{$ABS_PATH}admin/templates/images/uploader/error.png" width="10"> <span style="padding-right: 5px;">{#info_attr_name#}</span>