Once you decide to transfer funds to an external wallet or exchange, you need to follow these conditions:
Make sure the token you are sending via a specific network is supported by this exchange to avoid loss of funds. For example, most exchanges only support native NEAR coins, but any transaction of USDC via the NEAR network will not arrive at an exchange and funds will be lost;
Your account must be activated to execute any transaction. To activate your wallet, deposit at least 0,1 NEAR, you can find the guide here;
The address you send tokens to must be either a 64-digit one or custom near address (.near).
When funds are sent, you can find the transaction in your dashboard. Please click on your transaction.
Here you can find the link to the Explorer:
Once you found your transaction on the Explorer and it says that the transaction reached the destination, but the funds weren't received, please contact the destination wallet/exchange support team.
Also, you can use https://nearblocks.io to track where the tokens were sent to.
Always double-check the network you are about to send your tokens to and keep your funds safe!