Add-ons ask to install every, when I switch ON my system
I'm using Firefox latest version and I have installed some add-ons.
when I switch On my system for the first time and open my browser it again ask me to install that add-ons (it did not happen when I hibernate or put my system in sleep).
If you see disabled, not compatible, extensions in "Tools > Add-ons > Extensions" then click the Tools button at the left side of the Search Bar (or click the "Find Updates" button in older Firefox versions) to check if there is a compatibility update available.
If this hasn't helped then also try to delete the addons.sqlite file.