My USDT disappeared immediately after I got USDT


I got ERC-20 USDT from my friend.
Please check my ether scan screenshot.

As you can see, I got tether but it’s not showing in my wallet.
Also I can see I got another 0.69522653 Ether in ether scan, but really not.
And there are many transactions with my address but I never used this address before.
Would someone help me?

Thank you!