I too am having the exact same issue. All I get is an error code. I tried to log out and it just gives me an error code. I now also get this screen shot. It’s asking me to choose a type of cache but I can select anything.
I cannot search using "hidden by" "not hidden by" "found by" "not found by". Also, my maps keep coming up using Km and not miles in both Google and Apple. How can I fix these two issues. The "hidden by" feature is very important.