I've upgraded one of my machines in order to try native jira app from AppStore. Plot twist: I can't login to AppStore now from that device, it just says "unexp

I've upgraded one of my machines in order to try native jira app from AppStore. Plot twist: I can't login to AppStore now from that device, it just says "unexpected error" or something like that. No reboot/relogin fixed that no matter what. Plenty of people with the same issue as me as well who can't use AppStore.