JDex app not supported

The 'open in JDex' feature only works for apps that have a URI scheme. The app you've chosen does not, to the best of my knowledge.

For example, to open a note in Obsidian I tell your browser to open obsidian://<name of note> (simplified) and that's forwarded to Obsidian, which opens the note.

So if I don't know what app you're using, or if that app doesn't support this sort of thing, there's nothing I can do.

I might be wrong! If your app has a URI scheme and I've missed it, let me know and I'll be glad to add it.