[KNOWN ISSUE] Firefox won't let me paste my clipboard in Whatsapp and turns out I have to "refresh it" i.e., "reset it"

edit: Yeah, the problem has worsened.

So yeah, I wanted to paste a video on chatbox of a friend on Whatsapp web but I wasn't able to. When I tried to find a solution for it, I found this (Mozilla forums link) and it says, I have to reset my firefox browser. Now, my firefox is pretty customized, is there a way to save the extensions I have downloaded and their settings before I purge everything basically?

I use Linux btw, but, this is not Distro specific. If you follow the forums link, you would see that that guy was using some shitty distro called Windows 10

PS: I love firefox and can never bring myself to use Chrome, but this has been a utter waste of time and I wish I didn't have to do this. This wasted a lot of time.

dom.event.clipboardevents.enabled