I don't want to press the issue, but that statement is erroneous.
I downloaded the manual for the Marantec Synergy 260/270/280 - they are all 100% compatible with a pre-built z-wave solution like the GoControl GD00Z or FortrezZ Mimolite, or with the zigbee solution in the thread linked above.
Then, for the heck of it, I googled "Controlled Marantec Synergy 260 with GoControl GD00Z" - there's a lot of reports of people using them (using the terminals documented in the manual).
For example, here's a thread on the old Vera forums. Look specifically the posts linked below, one of which is by @cybrmage (who is a Hubitat developer now).
http://forum.micasaverde.com/index.php/topic,35153.msg259257.html#msg259257
http://forum.micasaverde.com/index.php/topic,35153.msg259281.html#msg259281
http://forum.micasaverde.com/index.php/topic,35153.msg259282.html#msg259282
http://forum.micasaverde.com/index.php/topic,35153.msg259290.html#msg259290
You may feel most comfortable using the Nexx Garage product, which is totally fine.
However, it is incorrect to state that the Marantec Synergy 260 isn't compatible with anything else (such as a z-wave or zigbee solution that would integrate with Hubitat).
