Movie
Why won’t my movie that I purchased play through? I’ve logged in and out of iTunes twice. It plays for a minute and then pops up saying log into Itunes.
iPhone XS
Do you have access to another WiFi network where you can try? That has worked for several people.
Try a restart.
Restart your iPhone, iPad, or iPod touch
Try a forced restart.
If necessary
Do a backup and try a factory reset. Then restore from your backup.
Backup - Restore your device from an iCloud or iTunes backup