Can’t Transfer Eth Balance From MEW?

I opened up my old MyEtherWallet and found a bit of leftover ether (.041) that was worthless but now worth a reasonable amount. I'm trying to transfer it out. MEW doesn't show any balance on the initial page but I see the balance on Etherscan/ethplorer.

When I click to transfer out the balance and select send all, nothing changes, and when I manually type it in and hit send, nothing happens.

Anybody know how to fix this? Is this because I downloaded MEW 2 years ago and it's out of date or another reason?