best thing to do is send a support request so you can get the help you need , you can do this by going to settings and clicking report
Hi, I've been playing with my brother for like 20 days on game 3591903 and I was on mobile data he was on wifi.
I played jamtland and he played right beside me, my nickname is geifhcdhze and his is Kroonch.
Today I forgot and played on the wifi, and got banned as a result of that, and I believe that he is too, although sleeping right now so I can't ask him.
Could I/we get unbanned please ?
For Future you probably need to make a personal map and turn off / disable the 'Anti-cheat' option when you are setting up your personal map to play with your brother; to prevent from being banned as a possible Multi account Cheater.
Claiming you 'forgot and used wi-fi' indicates you already knew about the anti-cheat rule and were intentionally circumventing it... which could also mean you forgot other things used to circumvent Bytro's Anti-cheat mechanisms...
God Luck and Have Fun
For Future you probably need to make a personal map and turn off / disable the 'Anti-cheat' option when you are setting up your personal map to play with your brother; to prevent from being banned as a possible Multi account Cheater.
Claiming you 'forgot and used wi-fi' indicates you already knew about the anti-cheat rule and were intentionally circumventing it... which could also mean you forgot other things used to circumvent Bytro's Anti-cheat mechanisms...
God Luck and Have Fun
But I mean wouldn't it be normal to want to play with a friend (and it's not even a friend, it's my own brother)? as long as it stays as an ally in the game so you don't have any external aid another player wouldn't have
you also set password then only ppl you give password to can enter your map
If you don't like being banned in an enabled-anti-cheat game, then be more cautious on using your wifi and your data etc.
This is a lesson for you and you should learn from this mistake to be more cautious on the network selection. Your passage also sent out a meaning that you know what multi-accounting will do and learnt the consequences.
I seriously, as Hastings did, suggest you to switch off anti-cheat or only join disabled anti-cheat games with your brother, if you think that you will play with multi accountable players, well, just don't play the game, or just disable anti-cheat. If you have so many thoughts, than just don't play the game. I'd rather switch off the anti-cheat settings and play a game nicely with your brother. Also, I think your account won't get unbanned as you knew the rules and claimed that it was a 'mistake'. I suggest you to open another account for your brother and play with him again from level 1.
