Unable to buy campaign with Google Play credit

1 of 687584749907971

I get the message that Google Play credit is unavailable for this purchase, although my credit is more than enough to pay for it:

Shan

I have to ask, is it still the case after restarting the app?
Are there maybe parental controls or something else in your profile that might prevent purchases from being made?

1 of 687584749907971

After rebooting the phone still the same. And I didn't set any parental controls on this account (and I'm way past the age my parents would do that and they were digibetes anyway).

Shan

OK
I would recommend to submit a ticket so we can keep track of the issue.
Support won't necessarily have a solution however, and you might need to choose another form of payment, I am sorry.
We need to assess is this happens to other players as well.