Version error with Toon Boom 7.0

Kids created projects at camp. Downloaded 7.0 at home and can’t open projects. Error reads: xxx.tbp not a supported version. E1023. Suggestion was to upgrade to 7.1. Where do I access 7.1?
Thanks

If the software is registered to a member’s profile you can download the latest release for that version from the “My Downloads” section of the members profile on the Toon Boom web site.