Did you check if you have disabled Clipboard Monitoring by accident? Button in top menu bar with checkbox in it. Because when you have to drag/drop or paste links then either
1.) they are not supported (URL format might have changed/unsupported) and you force JDownloader to deep analyse them
2.) you've disabled clipboard monitoring
From logs I can see that clipboard content is parsed but no further activity might result from 1.)
I would suggest we'll do a teamviewer session and you show us the issue so we can take a look at it together.
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support@jdownloader.org