What is this? I hope it not someone trying to get in to my account but anyways i just changed my password just in case. Yes I have 2FA on. But what is this?
Is just someone or something sending multiple requests to your account probably using your E-mail and password. I suppose you use different passwords for different services, which is a good thing. On one hand it’s a Gaijin system error accidentally sending multiple false-positive log-in request, on the other and worst case is that your E-mail might’ve been leaked somewhere alongside its password:
Which I highly suggest you to change any similar password used in this same E-mail linked to Gaijin dot Net.
Yes so hopefully everything else is fine.
Hopefully not shall I contact gaijin support?
Well, I changed the password, so it’s fine, right?
Hopefully. However just to be sure you should contact support for answers. If you changed your passwords, I hope everything should be fine.

