you can, to be safe PM me your and your brother's account names
when you play together make sure you actually play - don't let on account sitting AFK in the game while other plays...
warning is just a warning...update :
deckard cain wrote:Make sure that either both of you are playing (= killing monsters = gaining exp) or both are AFK (= not killing monsters = not gaining exp).
If only 1 of you needs to be AFK (= usually stay in town), then he should quit the game and rejoin later.
You may still get the warning, but you won't get banned if you follow this.
Also, do not eat any Signet when multilogging since bot will consider that you leveling a char and can potentially get you reported and banned.
Usually first account ban is 8-24h, second 48-72h, third is permanent