What the hell is this?

I staked 3400 USDT

and borrowed 3 BNB

to transfer out for new investments

but can only transfer out 0.9 BNB

What the hell is this?

If I want to transfer out 3 BNB, do I have to collateralize 10,000 USDT?

What's going on?

Please, great ones, help me understand.