Trying to setup Fb Messenger

For some reason I’m just getting this reponse:

Error 400 : (#10) Requires phone matching access fee to be paid by this page unless the recipient user is an admin, developer, or tester of the app. (Code 10)

I haven’t published or setup my page/app in any way, Just created them.
My phonenumber is listed in my profile and I’m set as admin for the page.

What might be wrong?