Has anyone ever received this type of message/error when buying a coppermembers?

[Mia Chloe]

Maybe I missed something, but it's kinda obvious for me. The user is or will be logged in to the forum with his account, why wouldn't they, when the goal is to buy a Copper membership? So the forum knows which user it deals with. I don't quite believe that this forum uses browser fingerprinting tecniques. For what purpose specifically?

If you are constantly making use of Tor you may not actually notice that the forum saves some cache and other data because of the fact that every time you close and reopen the browser you get a new onion circuit and based on privacy settings you don't get anything saved eventually.

But browsers like Chrome save data and cache for stuff like sessions, and to improve load speeds. You can confirm that when you try to clear your history you can either keep those cache or not.

[Cricktor]

It's likely that the forum uses some sorts of caching for a user, especially when that user is logged in. Makes also sense to do it for not logged in users, but attribution of certain things is way easier for users who logged in. Caching is commonly used to improve performance, nothing wrong about it. In the context of buying a Copper membership it totally makes sense and is inevitable that the user has to log in otherwise the Copper membership can't be assigned to an user account.

If forum's jurisdiction context requires paying attention to sanctions of countries on OFAC list, it makes sense and is likely required that the forum monitors geo-locations of used IP addresses of users, regardless how those users visit the forum (Tor, VPN, whatever). If a user comes from a sanctioned country, by real, by chance of Tor exit node when this is left unrestricted by the user (yes, you can configure Tor to use exit nodes from specific countries or regions, if you want it), they may accidently trigger a "no trade business" software fuse.

I don't know how the forum could possibly know if a user fakes his location or not. The forum assumes what it sees. If a user uses by own fault its native Iranian ISP or mobile internet provider, then it's safer for the forum to permanently exclude that user account from any money or value exchange business, regardless which IP address and associated geo location this account uses now or in the future.