This add-on usually works great but maybe because of constant updates to Firefox or Google, it's been inconsistent for the last 4 to 6 months, it seems, so that's why 3 stars instead of the usual 5 stars. It's really helpful, so I'd like to ask the dev, Joshua B., if he can please try to work out the issues it's been having. All of us really appreciate your work and have come to rely on it. We know you don't owe us anything, but we'd all thank you a lot if you can maybe do it when you have some time. Thanks for providing this to the community and we hope it gets resolved soon!