[Agnostos]

What this means exactly?
It shows me this issue to some links.

[Jiaz]

@Agnostos: without example links we cannot help at all. Most likely you're trying to add a link in URL format that is not/not yet supported, hence my question about example links.

[pspzockerscene]

Searching for "The link format is not valid.", this looks to be an error from multihoster "debrid-link.com".
Please investigate yourself, see also their API docs:
debrid-link.com/api_doc/v2/errors

Post example links and a log or contact the debrid-link.com support.

Please post your log-ID here
If your report is about a specific website which JD supports via plugin, please also provide example URLs which can be used to reproduce the issue you are having.
If your report is related to a login specific problem with a plugin supported website, enable debug mode before creating logs, see previously linked instructions.

Bitte poste deine Log-ID hier.
Falls dein Problem ein Problem mit einer Webseite ist, die per Plugin unterstützt wird, stelle bitte zusätzlich Testlinks zur Verfügung, mit denen sich dein Problem nachstellen lässt.
Geht es um einen nicht funktionierenden Account-Login, aktiviere vor dem Erstellen deines Logs den debug Modus (siehe zuvor verlinkte Anleitung).

-psp-