修复了一些问题

inc/helpers/aksrt-header-userbox.php

@@ -139,7 +139,10 @@ if (!function_exists('aksrt_header_payvip_bar')) :
 			$exp_label = '';
 			if (function_exists('aksrt_get_vip_info')) {
 				$info = aksrt_get_vip_info($user_id);
-				$exp_label = (string) ($info['expires_label'] ?? '');
+				$expires = max(0, (int) ($info['expires'] ?? 0));
+				$exp_label = $expires > 0
+					? sprintf(__('到期时间：%s', 'aksrt'), wp_date('Y年m月d日', $expires))
+					: (string) ($info['expires_label'] ?? '');
 			}
 			$html  = '<div class="mt10 em09 aksrt-header-payvip is-vip">';
 			$html .= '<span class="radius4 payvip-icon btn-block text-center vipbg-v2 level-' . (int) $level . ' aksrt-header-payvip__active">';