Firefox সহায়তা ফোরাম

How can I sign in to Netaddress with the new Firefox update?

I'm afraid that as I am old and female I haven't a clue how all the information below can help. What can I do with it? As I can't access my only email address, I'm not sure how I can follow instructions.

Fingers crossed for some information. At the moment all I get is 'bad request'.

I had downloaded a couple of pdfs from google drive via private browsing which were stored in my 'Downloads' folder. But as soon as I closed the window the pdfs were deleted. I had also downloaded a zip file which wasn't deleted.