I had 2FA on Poloniex. Couple days ago I changed smartphone, setup 2FA with recovery code but Poloniex does not accept codes anymore :-(. Sent a ticket to support 2 days ago. Just silence no reaction.
Should I consider that I lose deposit?
poloniex is reliable and trusted just that they customers support services is not encouraging. I believe you will restore your account and recover you coin just that you have to be patient with them. poloniex is not a scam site just that the customers support is bad.