Firefox

I agree with you, they should support Firefox. However, we can’t do any more than you can. This is a public forum and we are customers just like you. Call DIRECTV STREAM (number in my greeting below) and voice your opinion.

Even though it's not supported officially, I've been using Firefox for a couple of months w/o any issues (version 102.0). What are the issues you have @Phreddie?

Also, according to some studies (check Chartr report when IE was shut down https://read.chartr.co/newsletters/2022/6/15/rip-internet-explorer-1) Firefox shares less than 5% of the internet browser market. The highest is Chrome followed by Safari. 

Firefox works fine and has for several years.