Anyhow, when the apps stop being updated, it's usually due to something that was added that doesn't make them compliant with F-Droid's policies anymore; or, they changed something in the release process without telling F-Droid.
Other times, the apps were set to be updated only at the developer's request, and for some reason they still haven't done that request (some developers deliberately update F-Droid less frequently, to be more confident of not giving bugged releases to the F-Droid usere).
The normal delay, due to their manual (and lazy) signing process, is from few days to about ten
Anyhow, when the apps stop being updated, it's usually due to something that was added that doesn't make them compliant with F-Droid's policies anymore; or, they changed something in the release process without telling F-Droid.
Other times, the apps were set to be updated only at the developer's request, and for some reason they still haven't done that request (some developers deliberately update F-Droid less frequently, to be more confident of not giving bugged releases to the F-Droid usere).
The normal delay, due to their manual (and lazy) signing process, is from few days to about ten