Welcome to the Premise Home Control forum!
You'll have to use the 'obsolete' CM11A. Premise's CM11A driver is quite complete and extremely stable (as is Premise in general). I've used it for over a year without any major issues. In addition, it is an inexpensive device that can be purchased second-hand for very little money. There may be Cocooners here who have one lying around in their toolbox, gathering dust, and would be willing to part with it for a few bucks.
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Footnote:
This is my 1000th post. My thoughts? I need a hobby with more exercise! :mellow: