I am having 404 error issue with 2 subcategories open due to an added ?Itemid=0 at the end.
I could only find the issue with two subcategories and the Overview/UP button on the same category.
The plugin in the articles have no problems with links.
Category with subcategory issue here https://www.kidsactivitydownloads.com/index.php/public-downloads/category/165-fish-and-wildlife-activities
I have tried deleting .htaccess, rebuild links, refresh permissions, ran ACL Manager diagnostics, reinstalled jDownloads Version 22.214.171.124 and Joomla 3.9.24
No sef plugins installed and setting in globally is on default.
Any suggestions would be very helpful before I recreate new subcategories and redirect all the links to the new download folder.