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Ask the sender for the transfer hash and look at its status on-chain. If the transfer is confirmed, the USDT is already on the recipient address, and the question goes to whoever controls that address: you, an exchange or the owner of someone else's address. If there is no such transfer or it failed, the money never left.
The hash (TXID) is the 64 characters every on-chain transfer has. A wallet screenshot does not prove a transfer was sent; a hash does. Open it in a TRON block explorer and look at four fields: status, recipient address, token and amount.
Compare the address in the transfer with yours in full, not just the first and last characters. Scammers create look-alike addresses and plant them in transfer histories: according to FreezeCheck data, 7.3 million such fakes have been found on TRON since December 2023. Check your address: was my address spoofed. Only the owner of the address that received the transfer can send it back.
Anyone can issue a token called “USDT”. Real USDT on TRON has one contract address: TR7NHqjeKQxGTCi8q8ZY4pL8otSzgjLj6t. If the transfer shows another contract, it is a worthless fake.
A transfer to an exchange first lands on the exchange's address, and the exchange itself credits your balance. Delays come from an amount below the minimum deposit, a deposit on a network other than the one selected on the exchange, maintenance and source-of-funds reviews. Contact support and attach the hash. If the exchange points to risky funds: dirty USDT on P2P.
The balance lives on-chain, not in the app. If the explorer shows USDT on your address, refresh the wallet or add the USDT token in it manually.
An address frozen by Tether still receives USDT but cannot send it on: the money has arrived and sits there. Paste the address into the form above or send it to @freezecheck_bot. What to do: USDT frozen: 7 steps.
Usually about a minute: TRON produces a block every 3 seconds. Exchanges credit a deposit later, after their own checks, usually within a few minutes.
A blockchain transfer cannot be cancelled. Only the owner of the recipient address can return the money. If it is an exchange address, contact its support with the transfer hash.
Every sent transfer has a hash, visible in the wallet at once. Until you have the hash, treat the transfer as not made and do not hand over goods or money.
Most likely bait: this is how a look-alike address is planted in your history so that you copy it next time. You do not need to do anything with it; just never copy addresses from the history.
See also: can't send USDT, address poisoning, why USDT gets frozen.