Variable Font Instances don't install (Elza by Blackletra)

The font "Elza Round Variable" seems to have some kind of problem.

On Adobe Fonts in the Browser, it's shown to have 6 instances from "Light" to "Black", and also an Italic version of each. 

However upon installation, for some reason only "Light" and "Light Italic" show up in the CC App and in InDesign. The Variable-Font-Icon is there, but I cannot click it. 

Does anyone else have this issue, or might it be a local problem?

Thank you for the help.