roku connects to hotspot but wont steream any channel

I have an IPhone and yes it started after the update to iOS 15. I found the answer. Apple has upgraded their hotspot protocol so unless ROKu and other systems upgrade that too, they won’t be able to connect to the iPhone hotspot. Other companies have no reason to upgrade the protocol for now as only Apple has the new standard… so we are out of luck. The only solution for now would be to downgrade the iPhone to iOS 14… which I wouldn’t as the iOS 15 has more recent security upgrades I believe.