I have contacted bitget and they told me to wait for an email. I believe the email will ask me to provide proof of funds. So what should I do? How should I respond? Can you give me some good advice? I don't want to lose my funds.
Wait for Bitget to contact you and see what they say and what they want you to do. Unfortunately, you are now at their mercy. That's the danger of using untrustworthy CEXs like Bitget. They now hold your money as hostage and you'll have to comply with them to get it back.
After the mixing was completed, I used exch to send ETH directly to my own uniswap wallet APP. I checked my uniswap wallet APP ETH address and found a hacker tag on onlink. My own bitget address was also tagged with a hacker tag. I just want to know if there is still a chance to solve the problem.
You didn't mix anything. Don't mention mixing to Bitget either. eXch isn't a mixer. It's an instant swap service that allows you to exchange one cryptocurrency for an other.
Tell Bitget support that you used Uniswap to acquire your USDT. It's a decentralized exchange. Anyone can use it. You can't control the source of the coins that Uniswap sends to you.
I have never heard of or used oklink, nor do I care about the service they provide.