i don't remember, I am very carefuly with this things, have 2fa., mi 2f generation be in mi mobile. and use Yobit in mir laptop.
As far as I understand, you did not receive an email notification that someone entered your yobit account and you also did not receive an email notification that someone withdraw bitcoins from your yobit account, right?
If so, have you been able to get into your account after this sad event? and if you were able to get into your account after that robbery, did you see the trade historic and the withdrawal historic?
if you did not receive withdrawal notification email or notification email that someone logged into your account, then the theft was internal, ie yobit stole your bitcoins
Well, Op have to explain it properly. I barely can't understand the whole thing.
Like Op said have
BTC8.2 and then someone sold your coins to BTC, a little bit confusing.
So, you did not have bitcoin, until someone sold your altcoin to btc? What kind of altcoin?
Then explain about second question; as you have 2fa on your mobile phone, did you receive any notification?
There are too many problems with yobit services since last year, and this case just another evidence that you should never keep coins in such shady trading platform. There is nothing you can do about it, unless you live in Russia, as yobit operated in there.