How can I get my coins off Change tip? Are they lost to the void?

So five years ago someone gave me (at the time) $20 in bitcoin, which I've totally forgot about until going through old DMs. Changetip is gone now and I get a server error 500 when I hit the withdraw link.

Basically how can I get to this or is it just gone forever? I looked at the current value of it and holy shit do I need to find those coins.