oh dear
Find a different shop. NO ADSB or other avionic unit is going to list an Experimental Amateur Built aircraft as 'an approved type'.
The whole point of the SkyBeacon is to simplify the install where you already have the nav lights; beyond using a screwdriver, the only challenge is ensuring the transmission feed from the existing transponder, and then a verification flight to ensure the unit is functioning for ATC. [And, obviously, a log book entry describing the install/ how done, and by whom.]
To be clear: it is an EXPERIMENTAL AIRPLANE: have a tame trunk-monkey bolt a refrigerator to each wing if you want - so long as the A&P who does your conditional is happy with it, and the owner/ pilot ['s spouse] is comfortable flying it.
[And no, I won't fly in some of the E-ABs I see, unless they fix them.. and some I decline to touch at all. Not advocating poor thinking, just distinguishing from regulatory miasma.]