Picture in picture button disappeared on iPhone

So when you go to Settings > General > Picture in Picture there is not toggle for Start PIP Automatically?

Also in what app were you using PIP? Note that in YouTube, you MUST have a paid susbscription for PIP to be an available option on iPhone.

It's not available in every app. App developers have to add PIP capability to their app. As a new feature for iPhone with iOS 14, it may take a while before more apps with video capabilities offer PIP functionality. If there is an app you'd like to see the ability added to, contact the App Developer and tell them what you want.

Does nothing work PIP in Safari or are you using a web version of whatever ivi is?

Have you tried a Force Restart on your iPhone?

Press and quickly release volume up button

Then press and quickly release volume down button

Then press and keep holding the power button (keep holding past the swipe to power off) until you see the Apple Logo, then let go.

Then contact the App Developer for ivi.