I just installed this today and am getting an error for all of my plugins that they are not found on uMod and then they are all added to the blacklist. It appears that this does not work at all?

The site is currently on lockdown as it has been experiencing an attack. You'll likely see issues with this plugin until that is resolved.

I assume the issue has been resolved since 2 months ago. Can you please confirm?

This seems relavant again.  It's blacklisting all my plugins and not going through checking.

Merged post

I have figured out a temporary fix.  I disabled automatic blacklist and removed all plugins from said blacklist and now it's actually checking for updates.