I am using the latest stable xoops and user profile 1.7.
Up until recently it all worked well. However, had to disable new user registration due to the suffering of spam registrations.
For testing purposes I want to enable registrations again but now recaptcha doesn't show a text, just "invalid referer". Strange, as nothing has been changed, at least not by me. debug on doesn't show anything. Suggestions, help anyone please?

* problem solved

See this video