In the case of pornhub, videos are first processed by a crawler plugin.
If that fails for whatever reason you will have to re-add these URLs to let JD properly parse those.
This is probably what you have experienced or were you able to start downloading without having to re-add those URLs after enabling your VPN and restarting JD?
In any case:
Please post
your log-ID here | bitte poste
deine Log-ID hier.
-psp-