Several errors

Hello,
Creating a new product:
-Product seting drop-down menu show nothing, so I can not set up the product. Is is no longer showed in the products previously created (used to work well) so I can not change any settings.
-New categories are not showed on Shortcodes generator categories list, so I can not create new shortcodes.
-For any new product created, URL takes to 404 Page not found page.
-I also have this “My Account” log in problem, but I saw your previous answer.

I’m using Trades theme.

Plase help.
Thank you.

https://wordpress.org/plugins/thecartpress/