I've changed it successfully and it worked with coindebit card showing prices in local currency so it's not that. BTW I already regretted choosing the country I chose due to new in-app purchase restrictions but that's another topic. Google play gift cards just suck.
That's the problem. I can't activate them with the 2 VPNs that I have and I've heard people have issues with that even inside the country unless they're on mobile data.
I just found new service with prepaid virtual crypto cards: https://www.paywide.io $300 minimal top up, no KYC. Anyone heard about it? Or maybe someone wants to test it? Sounds fishy, I know but still.