I contacted Hubspot support but they weren't able to help me with this.
My development team has created a HTML +HubL page in the designer tool. It looks amazing in the preview, but after they publish it, it is nowhere to be found... We've created previous HTML pages and they show up in templates when trying to add them into the Landing Page, but not this one. Where could this be? Or how can I implement it?
Not sure how tech savvy you are, but it's worth looking at the network requests in the browser.
I was having the same problem: my template was not appearing in the list, so I could not choose it. I could create a new landing page from the design manager. But I wanted to run an AB test with the new template and I therefore needed to be able to select it from within the Landing Page / Edit Page / Settings / Template UI.
I looked at the network requests in the browser and this was the network request to retrieve the list of theme templates:
No worries. I'm not sure the logic behind the filters that the Hubspot UI puts on the templates...
I'm now trying to change the template for another landing page and it's put a "codedNoDndOnly=true" parameter in and now my template isn't showing again. Lol.