So I downloaded several of @Eldar templates from the Blocs Store. I double clicked them, they all opened fine in the app as a regular file. But they are not available for any subsequent use in the File/new/template page.
I tried exporting the file as a template, but that didn’t work either. Wondering what I am missing.
Update: Tried the extension manager to upload those files, but they were all greyed out and couldn’t be loaded.