Advanced search does not work

[alicebs]

When I try to do enter a term in the advanced search screen, I get an error message: "Please enter a valid field, ... or use UP/DOWN keys, and TAB/ENTER to select."

This is what the screen looks like:

[patentscope-wipo]

Please have a look at this help document
https://patentscope.wipo.int/search/help/en/PatentScope_Advanced_Search_Assistant_Brochure.pdf

patentscope-wipo