I have been searching the database for this kind of error but was unbale to get it solved thus far.
If I want to add it to the contribution page, not even the drop down is visible, and it seems like a display error, but I have tried it on multiple browsers and the problem persists. I reckon it must be some sort of definition error which makes no profile pop up in my contribution page. But where is the faulty definition?
Thank you very much for your help, appreciate it! I am using wordpress 4.12.1
Best regards Joël