Komunitné fórum Firefox

I use doxy me for telehealth. Recently my clients have been having audio issues, hearing their voice echo back when using telehealth. Doxy said it is the Firefox browser. They have had reports from other users of Firefox, that since the most recent update, people have had audio issues with echos when talking. They suggested I not use Firefox as a browser when working with Doxy me. Is there anyway this can be corrected or will I have to switch to Chrome as my go to browser?

I want to use Classic Bing as my homepage on Firefox. But, Microsoft has shoved New Bing down our throats for most of the year. There's a large white search box AND an enormous gray box "Introducing the New Bing." Both of these boxes take up half of the homepage, and completely obscure the Bing daily image, the only reason I use Bing. How in the world can Firefox help me get rid of these New Bing annoyances and let me enjoy the Bing daily images?