Yonke imikhiqizo Isithangami Sokwesekwa

I have a Shokz headset with volume and pause/play buttons. I watch videos on my Samsung s21+ using Firefox (more privacy, and easier to have multiple videos up with tabs comparedto YouTube app.

It worked fine up till today, when the pause/play button no longer does anything. I tried restarting the phone, closing and opening the Firefox (Ff) app, force-stopping the Ff app, and turning the headset off amd on. The headset functions correctly in other apps, just not Ff.

I don't want to uninstall and reinstall Ff if I can avoid it, but would that even work? I've done all I can short of that, but it still doesn't work.

Recently, the banner that usually appears when playing a video with Firefox (such as from youtube.com) has stopped appearing. I also cannot pause or play a video by clicking the controls on my headphones, which used to work. And finally, when playing a video or song from another app (eg. Newpipe), the video on Firefox does not automatically pause, which it used to to. I've tried updating both the app and my version of Android, but neither have helped. I would add images demonstrating what the media banner used to look like, but the "Browse" button simply does not work. Please help