We're on PHP 8.1, so not sure if this is a PHP 8.1 issue or something else, but went to add the add-ons we just purchased and getting a "Critical Error" that prevents anything from actually loading on that page. All the other pages seem to be loading though:
An error of type E_ERROR was caused in line 777 of the file /public_html/wp-content/plugins/atum-stock-manager-for-woocommerce/classes/Addons/Addons.php. Error message: Uncaught TypeError: Cannot access offset of type string on string in /public_html/wp-content/plugins/atum-stock-manager-for-woocommerce/classes/Addons/Addons.php:777