I've had the same issue with it in the past. Maybe 6 months ago. Then the dev did an update. I'm not having any issues with mine currently. I had the problem again maybe 2 weeks ago, tested it on another PC to see if it was just the one I was working on. It is working there so I cleared cookies and site data on the PC it wasn't working on and it started working again. Also, you may want to avoid removing and re-installing the extension because that will also remove your log of previous downloads.