cannot see custom games and cannot start lobby

I can see what's new, but for games and vault map searching doesn't come up with anything other than "404 not found". please advise.

Use the official client in the latest version. I am pretty sure you use the old one as discussed here.

"Nerds have a really complicated relationship with change: Change is awesome when WE'RE the ones doing it. As soon as change is coming from outside of us it becomes untrustworthy and it threatens what we think of is the familiar."
ā€“ Benno Rice

Thank you.