From the description of G-Droid, an alternative client for F-Droid repo:

shows the web-site of the app even if it is 'only a README file on github'. F-Droid has removed many websites (not all though) of apps the team doesn't like. They also don't allow (as of now) to re-add these link to the websites. This has been done with dodgy explanations and only for apps that the F-Droid team particularly dislikes (to censor apps they don't like) and reduce the amount of download and users of these apps. Hint: if your app is affected and shows no website in F-Droid promote and encourage your users to use G-Droid.

What the hell?