App store can't update/download iMovie

Hi there, adrial_bcn.

It appears that you're having a problem using iMovie on your iMac. After restoring a Time Machine backup to a used iMac, when you try to install iMovie you had to accept the previously installed application to be integrated to your account. You deleted the app and tried installing it again, but you're met with the same message. Good job on the troubleshooting you've tried, and we're glad to help with this.

What to do before you sell, give away, or trade in your Mac - Apple Support -- If you're trying to install/update iMovie on the previously used iMac, it sounds like it wasn't erased before it came into your possession. We recommend restoring it to factory settings, and this article takes you step-by-step through the process.

If we don't have the situation correct, please let us know.

Feel free to get back to us with any questions or problems you may have.

Take care.

Thank you for getting back to us, adrial_bcn. We recommend contacting Apple Support for help. Get Support - Choose Mac desktops > Other Mac Topics > Software or firmware not updating as expected.

Cheers!