hello! I am trying to play Prime Video. the message i get reads, "a later version of Mozilla Firefox is required for Prime Video. To update, click the menu button on the web browser toolbar, click Help, About Firefox and then click Restart. So i did go through those steps but when i get to the last stage, there is no "click restart button" for me to restart. i would like to play amazon prime video but I'm told am update is required. I do get a message with a green check mark saying Mozilla Firefox is up to date, but no option to click restart. it also says 90.0.2 (64 bit) any help would be wonderful! thank you! (my computer has windows 8.)