This is the response I got after providing all the documents they want and answered all of their questions.

No explanation. Straight up reject and on the way to disable my account.

The entire process took almost 2 months.

They were very skeptical about my source of funds.

My initial source of funds is my father's gift. I put the money into crypto market, following my trading strategy, I made more money than 90% of jobs in my country. So I define myself as a self-employed individual.

I provided the documents of

1. My father transfer money to me.

2. My monthly trade (positive gain every month).

3. Proof of ownership of my father's export company.

4. Export declarations documents of the company.

It should be more than enough to prove where the money came from and why I am self-employed.

If they want my father to hold a paper in front of the camera saying he was not threatened by me, I will ask him to do that.

Oh wait...

Anyway, after cleared all their doubt, they still rejected and disabled my account. My $150 initial deposit is gone.

I will never be able to change USD to USDT or change USDT back to USD at Tether.

Even if it is 100% backed, what's the point if they don't give you a gateway to do the exchange.