Worked well for years. Sometime last year it broke, all my sessions disappeared from the list and it will only save the last session. I think I did something that fixed it, or it fixed itself and I was able to get all my stuff back (thought I am unable to recreate what I did).

But now it has happened again and this time it does not seem recoverable. The export option in the extension settings does not even work.

Not reliable, wish I could rate it higher but I am now screwed because of this. So much time will need to be wasted to get all my research and prep work back.

Find an alternative that doesn't break/wipe itself as much and has more reliable backup methods.