Membership 2 Profile Fields add-on causing issues with registration

When Profile Fields add-on is enabled, users cannot sign up for the site, the registration page just reloads and nothing happen.

I’ve tried to deactivate all plugins, but it didn’t help. However, when I’m deactivating the BuddyPress plugin and BuddyPress Integration add-on, the registration form giving the following error (but doesn’t work anyway):

‘Please ensure that the information is complete.`