I'm sorry, wpForo doesn't have an addon with your request.

But You can check wpForo - WooCommerce Membership plugins integration addon, maybe this addon can be helpful for you.

Please NOTE: this is an integration addon for WooCommerce Membership Plugin, so for using the Addon the User also needs to purchase the Plugin.

thanks, i saw, but isn't there some add-on that allows the user to automatically go to the top level without the administrator giving the new access?

You can give access to attachments to the Users Based on their Forum Accesses and Usergroup.

Go to Dashboard > Forums > Settings > Forums Accesses, Edit One of the Forum Accesses and Check 

• Can attach file
• Can view attached files

Go to Dashboard > Forums > Usergroups, Edit one of the Usergroups and check 

• Front - Can access to attachments