404 errors with UAG

I am having issues. I am having several 404 errors and they are all UAG plugin issues and ive been having this issue and I think is Spectra related. Please help! I found this thread fro the epost with the same issue and found the solution but don’t understand what he did I’m not a dev): https://www.ads-software.com/support/topic/404-errors-with-uag/

He said this: “I have finally sorted it out with the help of my third dev. Turns out there is a fault in the Table of contents, had to remove it and now all the errors are gone”

The page I need help with: [log in to see the link]