36 volts is common on ebikes, especially fleet bikes (Citi, Divvy, Lime, etc.) and other class 1's which comply with the 250 W limit, which means there's a lot of cheap cycled-out (ahaha) equipment floating around. It is otherwise unusual though for sure; fortunately a lot of 48 V stuff is happy on 36 V.

I sell various 12V cables for the Starlink Mini

They’re almost universally returned

If it were me I’d just bite the bullet and make it a 48V only device to simplify things

Current arrangement is just a headache for non-technical consumers

I’m agnostic to the connector but really frustrated with consumers expecting any old 12-24 volt source will work