If someone use 2account from another platform in one league thats okey? or not?
i want to kick 1 from the 2account. But he said its legal so i want the answer pls?:)
Every league has their own rules. There is no "legal" or game wide rules on this.
I run 2 leagues where the rules are you can not have 2 accounts in the same tier, but you can have 2 accounts in the same league (one in Elite and one in pro for example).
I am in different league where its allowed to have 2 teams in the same tier (both elite for example) as long as its not stopping people from joining.
If you own the league its up to you to set the rules, just be nice about it :)
If you're not sure you could set up a vote in your league, so your managers can decide if they want a one team per manager rule or not.
This would be a good option. I notice the 2 teams you talk about have been in the league for some time and I can understand why you want one to move out as its taking a promotion spot. But since they are established teams its a little unfair to ask them to remove one.