Ohh, but I have no idea whether I used public VPN's and whether the ones I used were also used by hackers or not. Can I assume that my account its not banned and I can keep playing on another IP, or is it possible that my account is perm banned because of this?
I think my account is banned, since I have purchased a private VPN, I also tried restarting my router but nothing seems to work.
None of your accounts is banned. However, the IP you currently using is banned. Yes, you may keep playing on another IP. More reference: https://royals.ms/forum/threads/do-not-use-public-vpn-services-for-mapleroyals.73925/