Hi! Thank you all for your patience. We are aware of the problem and working on a fix. Hopefully, we will release an update soon. Once again, thank you all for your patience!
I'm getting it also. Obviously they still haven't found a work around for this yet. I've been waiting to hear back from them on when they think it will be fixed.
I don't think this is VDownloader issue. I think this is YouTube blocking VDownloader. I did a little research and evidently the music industry has put pressure on Google which owns YouTube to block things like VDownloader.
This is known. It has been a constant ongoing battle. YouTube makes changes to break VDownloader, VDownloader makes updates to work around the problem. This has been going on for yours.