I also faced the same issue when I wanted to upgrade my old EU account into Complete Edition, error code i2501.
Somehow I manage to find a a way to bypass it by deploying a virtual server on AWS EC2 on London region, and made the purchase there, problem solved. No charges either since I deployed the EC2 on a Free Tier instance.
Using VPN IP can be inconsistent.
Do no create UK account. Error code i2501, CS refuse to activate game code.
Mar 26 2021, 11:12 PM
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