However if you are scammed, then you were warned here before (with the scam attempts that you mentioned). Chinese sites are not quite trustworthy for non-Chinese. If you are not a Chinese then avoid using Chinese sites as their support (may) not speak good English, and may mislead us because of wrong translations.
My balance is 10 dogecoin, but in the interest page show 0 (also in account), but if you go to "withdraw" the balance come back to 10 dogecoin.
I don't know the reason because they decide to not fix the problem, the speak a not bad english in "private" I think they understand very well the situation, but maybe for lack of patience (of time or I don't know) they decide to not give assistance.
Is important to post also this small fraud/scam attempt because there are a lot of users that maybe got the same issues and prefer to not speak about it.
Now there is a "proof" about their conduct.