Can´t buy anything in the shop in the Pokemon Go game, eventhen there are money on the bank account and coins in the shop.

Can´t buy anything in the shop in the Pokemon Go game, eventhen there are money on the bank account and coins in the shop. The center ball is just turning around and I can't get out of the shop, only if I shut down the game. The issue happened some days ago, from one day to another. Can anyone help me, please, please.

I have a iPhone 11, about 4-5 month old, with iOS 13.5.1. Everything in the phone are ajour. Pokemon version are 0.177.1-A.

Best regard from Peter.