Upper Case letters in address changed by Metamask to lower case and aren't being received


I copy pasted an address from Coinbase to receive funds from Metamask.

During the transaction 4 of the upper case letters were changed in the receive-address to lower case - and the funds are therefore not showing up in Coinbase.

On eteherscan the funds are visible in the lower case version and the token holder address directs me to the upper case version. But the funds are still not in Coinbase.

What to do?