Can't purchase special event gem offer


On iOS, purchase required me to type apple id (usually just takes fingerprint), Signed in successfully but get message unable to purchase at this time due to unknown error. Checked Apple pay balance and I have a credit, checked apple id and works. able to purchase on other apps. Anyone else having problems

Purchase error message when I’m not trying to buy anything

I had it a week ago or so, and had to sort it out with apple support