Überprüfe bitte mal in der Datenbank ob die Adminrecht gesetzt sind, die sollten alle auf 1 stehen.
Hier mal ein
Beispiel von meiner Datenbank und den Rechten. bitte so nicht übernehmen, außer die Zahl 0 auf 1 setzen.
In 1. ist das der Hauptadmin mit allen Rechten und in 4. ist das ein Admin (id ist bei mir in dem Fall die 27) ohne Rechte, der immer wieder auf die account.php kommt.
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INSERT INTO `admin_access` (`customers_id`, `configuration`, `modules`, `countries`, `currencies`, `zones`, `geo_zones`, `tax_classes`, `tax_rates`, `accounting`, `backup`, `cache`, `server_info`, `whos_online`, `languages`, `define_language`, `orders_status`, `shipping_status`, `module_export`, `customers`, `create_account`, `customers_status`, `customers_group`, `orders`, `campaigns`, `print_packingslip`, `print_order`, `popup_memo`, `coupon_admin`, `listproducts`, `listcategories`, `gv_queue`, `gv_mail`, `gv_sent`, `validproducts`, `validcategories`, `mail`, `categories`, `new_attributes`, `products_attributes`, `manufacturers`, `reviews`, `specials`, `products_expected`, `stats_products_expected`, `stats_products_viewed`, `stats_products_purchased`, `stats_customers`, `stats_sales_report`, `stats_campaigns`, `banner_manager`, `banner_statistics`, `module_newsletter`, `start`, `content_manager`, `content_preview`, `credits`, `blacklist`, `orders_edit`, `popup_image`, `csv_backend`, `products_vpe`, `cross_sell_groups`, `fck_wrapper`, `econda`, `cleverreach`, `sofortueberweisung_install`, `shop_offline`, `xajax`, `blz_update`, `removeoldpics`, `janolaw`, `haendlerbund`, `backup_db`) VALUES ('27','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0');
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Hoffe das hilft dir weiter
Gruß