Hey. Honestly, I also dont really get what you mean by "main currency". You are welcome to add multiple wallets in any currency you like. Please check this instruction:
When I registered account I was asked to select one currency.
I deposited different coin in my account.
In order to avoid exchange difference, you are welcome to add wallets to your account in any currency you would like. For example, add a USDT Tether wallet at MegaPari to your account and deposit from your USDT Tether wallet. Otherwise, as you can see on the screenshot, the currency of my deposits are in MAD, but the account is in EUR. So, when I deposit in MAD, the internal system will exchange MAD to EUR and credit the end sum after the exchange. Does it make sense for you?
And what happens with withdrawals, same thing in reversal?
Support told me many times that I can only withdraw coin that I deposited, and in reality I made withdrawal of USDT after depositing LTC.
Either support is not speaking English very good or they cant explain it correctly.
Regarding your withdrawal - some coins are closed for maintainance at the moment. It is true that if your last deposit is in LTC, you should withdraw with LTC. And what you mean reducing USDT? Have you been credited 2 dollars for sth?
No.
Why would I even try withdrawing 2 USDT two times?
I entered amount I wanted to withdraw, and only 2 USDT was deducted from my account two times.
There was no announcement or any warning that some coins are not available for withdrawal, and support was not helpful at all.
Today I tried to withdraw again, before that I asked support and they told me USDT should work fine.
After I completed withdrawal nothing happened and status was shown just this -, so I asked support again and they told me Security Department is dealing with this and I should wait for about 24 hours...
Another thing is that I cant see any addresses I used for withdrawal in transaction history, this should be added with more details in my account page.