I started a Portal and now I cant change fields in modules

I started a Portal and now I cant change fields in modules

Hello!

Im receiving the following message in our Deals and Contact module when trying to make changes in our modules. The only thing that changed lately in our CRM is that we created a Portal just to check the feature (it is not currently in use). I think this might be the issue. All users have permission to edit (read/Write) theese fields.

How can I solve this situation or disable the portal? (It is off, actually)