So I had this issue with Blockland where no add ons would work. I realize it was helpless to try to fix that, so I gave up. Earlier today I tried launching Steam and it wouldn't load so I had to restart my computer. After restarting, everything was fine, but all my games were uninstalled and I was signed out. I re-downloaded everything, and whenever I launch Blockland, I get this message:

I was wondering if maybe the Addons issue had a correlation or not, thats why I included it.
How do I fix this and wtf is wrong with my Blockland!