When you send a lot of ETH or USDT to a big exchange like Kraken, do they care if its come from a smaller non kyc exchange like Blofin? Do they care if it came from a bridge?
The exchanges system automatically credits your crypto deposit. But if your transaction is suspicious then the deposit is frozen. Be it small amount or big amount. I faced such a problem. I made a NEAR deposit from a wall on Binance but it was credited but my balance was frozen. Later I contacted the support and after giving them all the detailed proofs they unfroze my balance. When I asked them about this they said that my transaction was suspicious due to which my balance was frozen. So it can be said that any exchanger can freeze your balance if your transaction is suspicious