I can’t cast from my phone either anymore.. been a couple weeks now.
After unplugging and Re plugging my new Chromecast I can use it, but it
freezes and glitches a lot.
I have the same issue. My Chromecast lostconnection last week.. tried
everything.. went and bought a new on (4K!) .. worked for a day .. today
it’s back to the same issue and won’t let me factory reset.