After switching from Chrome on firefox, I was looking for a replacement for the "Papier" extension, I found only one similar - Board.

At first I was satisfied, It worked without problems. But after one of the next update Firefox I saw with horror that all my text was gone, the default text is only displayed. I thought it was a one-time glitch and continued to use, but a month later I ran into the same problem!

Now I can not trust this extension. I can not understand why this happens. Other installed add-ons don't lose data when updating the browser. I tried to find the file where the text is stored, I realized that the data is stored in localStorage and found database (AppData\Roaming\Mozilla\Firefox\Profiles\***.default\webappsstore.sqlite), but there was only new text.

Dear developer, I'm not sure it's your fault, maybe Firefox, but please, can solve this problem?
P.S Sorry for my bad English.