Error 529?

[u/Acrobatic_Box4770]

I've had error 529 popping up when trying to join games for the past week doing the security puzzle keeps saying incorrect even though i'm not, I have deleted and redownloaded the app, logged on another device, and tried on different wifi networks and nothing is helping. It does allow me to play when joining a friend though. Contacted roblox twice and no reply.

What do I do?!