Should I be careful with using VPN?

Sometimes I use VPN on browser, and then go to the boards here while logged into my account. VPN would make it seem as if I got on from another country, and then on the same day (when I switch off the VPN) move back to the old country. I wouldn't want a misunderstanding like that to happen. I read a post that someone got banned for using a VPN once (But I think it was for using a vpn in the game itself).
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