I was able to solve the problem. To do this: I disabled the following option in my "Reply Only" access: "Kann Inhalte abonnieren / Abos beenden" -> so written in my Options. I don't know, maybe is a fault translation or it is a bug.

Thanks anyway

Steven

Please edit each category and forum, and make sure you're assigning the correct Forum Access level to each Usergroup.

Attached you'll find two photos, one for the user group and the other for access. I have access called "Reply Only." The "Registered" user group doesn't have moderation rights.
I've linked the forum permissions for registered users to "Reply Only." What's wrong with that?
Best regards,
Steven

Please edit the forum settings and check the Usergroup access for each forum. Each Usergroup is assigned a specific Forum Access level for each forum. For example, the Registered Usergroup (which corresponds to the WordPress Subscriber role) has Standard Forum Access by default in all forums.

So, please make sure you're assigning the correct Forum Access level to each Usergroup.

Additionally, we recommend reading this FAQ carefully:
https://wpforo.com/community/faq/wordpress-user-roles-wpforo-usergroups-and-forum-accesses/#post-39664

It will help you better understand how wpForo Usergroups, Forum Accesses, and WordPress User Roles work together.