2 related problems. 1) Lately having difficulty playing vids on Twitter. Sometimes fine, other times they start, then reboot, repeatedly and won't play. 2) I used to see prompts on explore.org for 'pop cam', to create a new window of just the live-cam. This prompt no longer appears in FF. When I open the site in Vivaldi, it appears, as you can see in the screenshot I've attached. Eg., https://explore.org/livecams/africam/olifants-river I have read through a number of FF articles, tried changing audio/visual permissions, cleared cache. No difference. I have way too many tabs open, though not loaded. I sincerely hope this isn't creating the problem, as my brain is very slow, it takes me a long time to complete things I've been researching. And until very recently, there were still many tabs, without my current problems. Thanks for your help.