I ran into the same problem several months ago.  It was a bug in my vpn.  They updated it two days later and the bug went away allowing me to access amazon again.

On Sat, 24 Jul 2021 07:32:17 -0500

Dave Ulrick <d-ulrick@comcast.net> wrote:

I think I've got the issue narrowed down:

 

- FF 90.0 with my primary FF profile: issue DOES occur

- FF 90.0.2 with new FF profile: issue does NOT occur

- FF 90.0 with profile created when I launched FF 90.0.2: issue DOES occur (I used about:profiles to open a new FF 90.0 browser using the FF 90.0.2 profile.)

 

Maybe there's an issue with FF 90.0 that contributes to my (intermittent) amazon.com problem that is fixed in FF 90.0.2.

 

FC33 is still providing FF 90.0:

 

# dnf --refresh list firefox

...

Installed Packages

firefox.x86_64 90.0-1.fc33                        @updates

 

Hopefully it will provide 90.0.2 in the near future. In the meantime I'll run FF 90.0.2 downloaded from mozilla.org as a workaround.

 

Dave