Netflix does not play a stream on Firefox?

wo
- in PlayStation
1

I would like to watch Firefox Netflix, but unfortunately the stream is not playing. Here comes this message:

Oops, something went wrong…

This title is not available for streaming please try another title.

Error code: F7121-1331

What I have tried so far:

- Of course I have tried with several other series

- On Google Chroome, Amazon Stick, Ps4 my Netflix account goes without problems

-My Firefox is up to date

- I have tried it on 3 different PC's, 2 times Windows 10, once Windows 7, all the same problem on Firefox

What else could I do about it?

Im

Try to clear the Firefox cache. (Instructions on google)

Or disable all browser add-ons and plugins for a short time and try obs then go.
Should work on Firefox. Go with me too.
In an emergency, reinstall the browser, but should also work without.