PDFIndex problem

I am trying to add functionality for users to be able to search pdf documents in my Umbraco application. It works fine searching in ExternalIndex but not in PDFIndex or if I try with MultiSearcher. My appsettings.json is correct and it works fine with searching via Examine Manager. Does anyone have any idea why it might not work?

Do you see documents being indexed in the backoffice overview of the pdf index?

Can you find any results if you search in the backoffice examine searcher?