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You have obviously typed the information incorrectly in the setup for the account, not only once but for both accounts. You are signing in one bot under one key, then another one under the same key. Why do you think this would work? Go into each account you have set up in the launcher, and verify all the information is correct before posting here about an "error".
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Both 2 accounts information correct.

The first one is almost OK, game window automatically launched, but will stuck at the log in window, It'll bring out this message,""wrong data centre, this data centre never activated"" This is no big issue, manually choose it, problem solved.

The 2nd one, game still not launching. Not even reaching the log in part. So I try to manually log in and attach bot. I was expecting it will pop up the minion key window for me to key in, but it automatically attached the key of my first account, so the first account crashes.

Anyway this is not a minion key issue. I'll make it simple and clear

1. Data centre not correct ( it only appears correct)
2. 2nd account onwards not launching