Please find the “Image Occlusion Enhanced” note type under Tools → Manage Note Types, rename it to “Image Occlusion Enhanced Backup”, and then restart Anki. This will prompt the add-on to regenerate the default note type, which should fix the note type and templates
Unfortunately I can’t provide support for custom note types / templates at the moment, as looking into what went wrong on a case-by-case basis would take up too much time. However, if you play around with this a bit and compare the original note type & templates under “Image Occlusion Enhanced” with your changes under “Image Occlusion Enhanced Backup”, I’m optimistic you can fix the issue.
(@dae could you merge this thread into Image Occlusion Enhanced [Official Support Thread] please? [if that’s possible, not sure how Discourse does things])