01One ticker, several networks
USDT exists on Ethereum, Tron, and BNB Chain. These are separate networks and are not interchangeable. The same applies to USDC.
Each deposit address is issued for one specific network and only accepts transfers on that network.
02What goes wrong
Sending USDT over Ethereum to a Tron address results in permanent loss. Neither Meridian nor the network operator can reverse it.
The transfer settles on a network where the destination address does not exist.
03How to check
Confirm that the network in your sending wallet matches the network on the deposit screen. Match the network, not the ticker.
Send a small test amount first if you are unsure.