Problem with categories and Form

Hello. Faced such problems.
I used the "Import-Export Categories" plugin. I set up a form for adding ads and I have this situation. The fields that I entered in the form are not displayed on the "Add ad" page, and fields in subcategories are not inherited.
Screenshots attached.

I also ran into a problem when adding a new category. The system writes that the category with such a key is in the trash box, while the trash is empty.

Tell me please, what could be the problem?

Hello,

Try to refresh the system cache via Common > Refresh and rebuild the category levels (Rearrange category levels)


As for categories, first, you need to execute the following query:

Code:

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then, apply this fix to completely remove the 'hidden' categories:

in includes > classes > admin > rlAdmin.class.php > deleteTrashItem > case 'categories':

after:

PHP Code:

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add:

PHP Code:

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Thank you Rudi for your help and prompt response :)