You can deposit USDT that was purchased elsewhere, exchanged or pre-owned by entering the Exchanges section in the Merchant Dashboard.
Click Exchanges on the side menu.
In the TETHER CREDITS window, select Deposit and the Deposit page with a QR code opens.
You can either scan the QR code that includes your deposit address or copy/paste the address to which USDT shall be sent.
The minimum deposit is 20 USDT per transaction and the maximum deposit is 15.000 USDT per transaction. You will receive an automatic email with all the details from the USDT top-up.