Hi Jarmo,
Thanks for the email with the login link.
Your template doesn’t apply in frontend it’s because of the OffCanvasMenu template.
You set it as Single template with condition set to Entire Website.
Your website has 2 Single templates with the same condition (with same score), so the earlier Id will be used in the Single page now. (OffCanvasMenu)
If you set that OffCanvasMenu template to section type or set it as a draft, you should be able to get your result as expected now.
Regards,
Jenn