Hello, I have some add-ons enabled. Frequently like in some weeks or a month, all the add-ons get automatically removed and the message that 'your added add-ons aren't supported anymore' appears. Then I go to the addons website and I see that the same add-ons are already added and just 'remove' option appears for the same add-ons. But then when I go to my add-ons list, the same addons don't appear. After a day or restarting browser/PC, the addons then automatically appear. This time it's been a day, and I don't remember all of my old-addons. But the addons aren't appearing and it's really been a very annoying issue. Any help on it?