diff --git a/assets/js/admin.js b/assets/js/admin.js
index 2a967bd..ec51915 100644
--- a/assets/js/admin.js
+++ b/assets/js/admin.js
@@ -189,7 +189,7 @@
 
 		// Validate inputs.
 		const validateFormInput = (input) => {
-			let inputLabel = 'This field';
+			let inputLabel = '';
 			if (
 				$('label[for="' + input.id + '"] span').length > 0 &&
 				$('label[for="' + input.id + '"] span').text()
@@ -200,10 +200,7 @@
 				inputLabel = inputLabel.split('/')[0];
 				inputLabel = inputLabel.split('(')[0];
 			}
-			const requiredError = (params.required_error || "%s can't be blank.").replace(
-				'%s',
-				inputLabel,
-			);
+			const requiredError = (params.required_error || '').replace('%s', inputLabel);
 			const requiredInputs = [
 				'first_name',
 				'last_name',
diff --git a/includes/admin/templates/create-account-page.php b/includes/admin/templates/create-account-page.php
index 8b996eb..e9416e3 100644
--- a/includes/admin/templates/create-account-page.php
+++ b/includes/admin/templates/create-account-page.php
@@ -57,13 +57,13 @@
 							<path fill-rule="evenodd" clip-rule="evenodd" d="M9.05715 8.00005L6.19522 5.13812L7.13803 4.19531L10.9428 8.00005L7.13803 11.8048L6.19522 10.862L9.05715 8.00005Z" fill="#241C15" fill-opacity="0.3"/>
 						</svg>
 					</span>
-				<div class="step-2 <?php echo esc_attr( ( $signup_initiated ) ? 'current' : 'deselected' ); ?>"><?php echo esc_html__( 'Activate account', 'mailchimp' ); ?></div>
+				<div class="step-2 <?php echo esc_attr( ( $signup_initiated ) ? 'current' : 'deselected' ); ?>"><?php esc_html_e( 'Activate account', 'mailchimp' ); ?></div>
 				<span class="chevron">
 						<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
 							<path fill-rule="evenodd" clip-rule="evenodd" d="M9.05715 8.00005L6.19522 5.13812L7.13803 4.19531L10.9428 8.00005L7.13803 11.8048L6.19522 10.862L9.05715 8.00005Z" fill="#241C15" fill-opacity="0.3"/>
 						</svg>
 					</span>
-				<div class="step-3 deselected"><?php echo esc_html__( 'Choose plan', 'mailchimp' ); ?></div>
+				<div class="step-3 deselected"><?php esc_html_e( 'Choose plan', 'mailchimp' ); ?></div>
 			</div>
 		</div>
 	</div>
@@ -109,7 +109,7 @@
 								<div class="box box-half">
 									<label for="phone_number" class="optional flex justify-between">
 										<span><?php esc_html_e( 'Phone number', 'mailchimp' ); ?></span>
-										<span>Optional</span>
+										<span><?php esc_html_e( 'Optional', 'mailchimp' ); ?></span>
 									</label>
 									<input type="text" id="phone_number" name="phone_number" value=""/>
 								</div>
@@ -139,7 +139,7 @@
 				</div>
 
 				<div id="mailchimp-sf-business-address" class="mailchimp-sf-create-account-step">
-					<div class="subtitle"><?php echo esc_html__( 'Business Address', 'mailchimp' ); ?></div>
+					<div class="subtitle"><?php esc_html_e( 'Business Address', 'mailchimp' ); ?></div>
 
 					<div class="mailchimp-sf-form-wrapper">
 						<fieldset>
@@ -211,6 +211,7 @@
 									<div class="mailchimp-select-wrapper">
 										<select id="timezone" name="timezone" required>
 											<?php
+											$selected_timezone = wp_timezone_string();
 											foreach ( $timezones as $timezone ) {
 												?>
 												<option value="<?php echo esc_attr( $timezone['zone'] ); ?>" <?php selected( $timezone['zone'] === $selected_timezone, true ); ?>>
@@ -261,9 +262,9 @@
 			</form>
 
 			<div class="mailchimp-sf-confirm-email <?php echo esc_attr( ( ! $signup_initiated ) ? 'hidden' : '' ); ?>">
-				<div class="title"><?php echo esc_html__( 'Check your email', 'mailchimp' ); ?></div>
+				<div class="title"><?php esc_html_e( 'Check your email', 'mailchimp' ); ?></div>
 				<p class="h4">
-					<?php echo esc_html__( 'To start using Mailchimp, activate your account with the link sent to ', 'mailchimp' ); ?><span class="mailchimp-sf-email"><?php echo esc_html( $email ); ?></span>
+					<?php esc_html_e( 'To start using Mailchimp, activate your account with the link sent to ', 'mailchimp' ); ?><span class="mailchimp-sf-email"><?php echo esc_html( $email ); ?></span>
 				</p>
 
 				<div class="flex items-center gap-x-6">
diff --git a/includes/class-mailchimp-admin.php b/includes/class-mailchimp-admin.php
index b576f84..5953419 100644
--- a/includes/class-mailchimp-admin.php
+++ b/includes/class-mailchimp-admin.php
@@ -436,14 +436,12 @@ public function enqueue_admin_page_scripts( $hook_suffix ) {
 	 * Add the create account page.
 	 *
 	 * @since x.x.x
-	 *
-	 * @return void
 	 */
 	public function add_create_account_page() {
 		add_submenu_page(
 			'admin.php',
-			'Create Mailchimp Account',
-			'Create Mailchimp Account',
+			esc_html__( 'Create Mailchimp Account', 'mailchimp' ),
+			esc_html__( 'Create Mailchimp Account', 'mailchimp' ),
 			'manage_options',
 			'mailchimp_sf_create_account',
 			array( $this, 'create_account_page' )
@@ -458,9 +456,8 @@ public function add_create_account_page() {
 	 * @return void
 	 */
 	public function create_account_page() {
-		$countries         = $this->get_countries();
-		$timezones         = $this->get_timezones();
-		$selected_timezone = $this->get_current_timezone();
+		$countries = $this->get_countries();
+		$timezones = $this->get_timezones();
 		?>
 		<div class="wrap" id="mailchimp-sf-create-account">
 			<hr class="wp-header-end">
@@ -480,41 +477,16 @@ public function create_account_page() {
 	 */
 	private function get_timezones() {
 		$zones_array = array();
-		$timestamp   = time();
-		$current     = date_default_timezone_get();
-
 		foreach ( timezone_identifiers_list() as $key => $zone ) {
-			date_default_timezone_set( $zone ); // phpcs:ignore WordPress.DateTime.RestrictedFunctions.timezone_change_date_default_timezone_set
+			$timezone                             = new DateTimeZone( $zone );
+			$diff_string                          = ( new DateTime( 'now', $timezone ) )->format( 'P' );
 			$zones_array[ $key ]['zone']          = $zone;
-			$zones_array[ $key ]['diff_from_GMT'] = 'UTC/GMT ' . date( 'P', $timestamp ); // phpcs:ignore WordPress.DateTime.RestrictedFunctions.date_date
+			$zones_array[ $key ]['diff_from_GMT'] = 'UTC/GMT ' . $diff_string;
 		}
 
-		date_default_timezone_set( $current ); // phpcs:ignore WordPress.DateTime.RestrictedFunctions.timezone_change_date_default_timezone_set
-
 		return $zones_array;
 	}
 
-	/**
-	 * Get the current timezone from WordPress settings.
-	 *
-	 * @return mixed|string|void
-	 */
-	private function get_current_timezone() {
-		// Get timezone data from options.
-		$timezone_string = get_option( 'timezone_string' );
-		$offset          = get_option( 'gmt_offset' );
-
-		$signal = ( $offset <=> 0 ) < 0 ? '-' : '+';
-		$offset = sprintf( '%1s%02d:%02d', $signal, abs( (int) $offset ), abs( fmod( $offset, 1 ) * 60 ) );
-
-		$timezone = $offset;
-		if ( $timezone_string ) {
-			$timezone = $timezone_string;
-		}
-
-		return $timezone;
-	}
-
 	/**
 	 * Get a list of countries.
 	 *