Match the network on both sides
Select Ethereum in the current wallet and read its available networks. Then select the same supported network in the sending service. An address that looks familiar is not enough: several chains can use a similar address format. Do not infer support for an additional chain merely because it can hold ETH elsewhere.
ETH is not every token on Ethereum
ETH and a token such as USDT are different selected assets, even when they use the same blockchain. Check the coin, network, destination and amount as separate fields. Read any minimum shown in the deposit instructions. Copy details from the active account screen and inspect them again in the final confirmation.
Record the transaction
Keep the transaction hash and selected chain so that an explorer or support team can locate the correct transfer. Network confirmation and internal account crediting are separate steps. Fees vary with the route and service, so use the current quote. Before withdrawing, confirm that the destination service supports receiving ETH through the selected network.