ruden

Not necessary, it depends on the task. The peculiarity of hooks is that you can add code without changing the file code.

@Fredi I completely agree with you Phoenix only for personal enrichment and does not bring any benefit to the community. If Phoenix was that good I wouldn't work on Vanilla osCommerce.

PHP error log needs to be checked

Yes https://apps.oscommerce.com/p9Yyp

allow_url_fopen should be set to On in php.ini by default

Unfortunately this doesn't work with Ultimate SEO URLs, due to the language session.

Which SEO add-on is installed in the store?

In file sitemap.php this code if (SEARCH_ENGINE_FRIENDLY_URLS == 'true' || (defined('SEO_ENABLED') && SEO_ENABLED == 'true')) { $languages_array = tep_db_query("SELECT code FROM languages"); while ($languages = tep_db_fetch_array($languages_array)) { $file_extension = ($languages['code'] == DEFAULT_LANGUAGE ? '' : '-' . $languages['code']); create_sitemap($file_extension . '.xml'); create_sitemap_catalog($doc, $root, $file_extension . '.xml'); } } else { create_sitemap(); create_sitemap_catalog($doc, $root); } replace with //if (SEARCH_ENGINE_FRIENDLY_URLS == 'true' || (defined('SEO_ENABLED') && SEO_ENABLED == 'true')) { $languages_array = tep_db_query("SELECT code FROM languages"); while ($languages = tep_db_fetch_array($languages_array)) { $file_extension = ($languages['code'] == DEFAULT_LANGUAGE ? '' : '-' . $languages['code']); create_sitemap($file_extension . '.xml'); create_sitemap_catalog($doc, $root, $file_extension . '.xml'); } //} else { // create_sitemap(); // create_sitemap_catalog($doc, $root); //} OR If you know what constant controls the inclusion of your SEO add-on, then just replace SEO_ENABLED with [YOUR_SEO_ADDON_ENABLED]

@mendoh Give a link to your site.

var_dump($_POST['formid'], $sessiontoken); ???

Include class hooks two times remove duplicate in /includes/application_top.php and /admin/includes/application_top.php require(DIR_FS_CATALOG . 'includes/classes/hooks.php');

YES

I find it difficult to answer. View error logs.

Yes.

@Tiff13 Installed Hook System? https://apps.oscommerce.com/p9Yyp&hook-system