I wish I could find and thank this person. They tried getting into my old email account unsuccessfully, but otherwise they did no wrong, only good. Spent 10 eagles to finish researching my Panther G. Ground my USA planes and unlocked 2 or 3 planes.
Didn’t buy anything with Lions. Didn’t spend crew points.
I think they just desired the grind and were an absolute Chad 
Don’t worry, in a couple of weeks you’ll be banned for cheating.
This just happened to me too. I think they were able to spend a few days playing on my account but not too long. I saw that after I logged back in I was kicked from their squadron too. I don’t know if they cheated while using my account so I might get banned soon lol.
I don’t have the GaijinPass app available to me on my iphone. Says it’s not available in my country. I’m in the U.S. Now I’m relying on email authentication.