All the tabs I had saved in Tab Session Manager disappeared

When I put my PC to sleep, my Firefox add-ons disappeared and stopped showing up, and I was automatically logged out of the sites I was logged into. After that, Tab Session Manager
showed an error saying it was corrupted, and when I tried to repair it, all the tabs I had saved previously disappeared. How can I restore them?

Hi Parker, and apologies for the late reply. We had a technical issue with Discourse.
Have you had the opportunity to connect directly with the Tab Session Manager add-on creator(s)? They should be able to help you with this add-on-specific question. Thank you

I just sent you an email.