SVPtube fails to retrieve links

Hello,

for me SVPtube is very inconsistent recently. It often can't resolve links and just gets stuck at "Getting info for video '<videoid>'". It never finishes and presents download options, but just stops there. The UI still works, I can show/hide the window by clicking the icon in the tray, but even restarting SVPtube doesn't help either. In most cases, copying a different video-url will cause it to change the message accordingly, but the links are still not extracted and it gets stuck there again.

This is on more than one PC, trying multiple internet connections. The videos themselves work fine in a browser. What's extremely weird is that sometimes rebooting the PC does make SVPtube work again, but not necessarily. I just have no idea what's stopping it from resolving the links, and I can't find a log-file to help diagnose the issue. I would've debugged the app myself, but the source also doesn't seem to be available.

Any hints/help?
Thanks!