When you buy USDT, you're transferring money to the merchant's account. It's not a big deal, just a protective freeze. Just explain it clearly to your uncle. Even if all the cards under your name are frozen, it's nothing serious—it’s just a protective measure. Normally, the freeze will be automatically lifted in about 10 days to half a month. Are you sure it's Binance Selected? I'm really surprised that a Selected merchant turned out to be involved in fraud.