My screen mirroring is working up until it's time for me to watch a movie on a website then when I press play to play the movie the mirroring just stop and my tv just show that something is loading but the movie is not playing through the tv I

Hey there charise224,

Thanks for reaching out to the Apple Support Communities. We understand you're having issues with using the screen mirroring feature, and we'd be happy to get you pointed in the right direction for help.

To get started, have you had a chance to go through the steps provided in the 'Related Article' that was shared with this thread? Here that is again, just in case: If AirPlay or screen mirroring isn’t working on your device - Apple Support

If so, then we would recommend reaching out to Apple Support directly from this link here: Get Support - Apple

From that link you'll want to choose iPhone, then in the search bar type 'Airplay' and from the list of results choose 'Using AirPlay Mirroring'. From there you should see a few options to reach out, depending on your location.

Take care!