I was wrong and I appologize for the sh*tty comment below. It was my fault and lacked patients before I finally figured it out.
Problem: Could not connect Wyze Cams to Fire TV 4k
Solution: I have 2 fire sticks and one new Fire Tv 4k. I have 2 echo dots and one echo plus. The problem was not the wyze cams at all but the Alexa app and settings. I had to go into Movies, tvs and books, tv & video and select fire tv. Then i had to unlink all the other echos attached to the fire tv. Only one can control it like it stated. The other issue is that i moved the echos to different rooms and switched them out and renamed them but didnt change the links to their new respective fire devices. I was growing frustrated and did realize.
First you lie and say it works with Alexa. Then you say wait for update. Then you say it works with fire tv gen 3. All LIES! I am so ready to return this crap! Alexa keeps saying something went wrong after i JUST BOUGHT A FIRE TV 4K JUST TO MAKE IT WORK WITH WYZE DID I BUY CRAP CAMERAS (8 OF THEM) IN THE FIRST PLACE. THANK GOD I SAVED THE BOXES… STOP TELLING LIES AND FIX THIS OR MY COMPANY WILL USE SOMETHING ELSE. OR GO BACK TO WORK FOR AMAZON. THANKS FOR NOTHING!