Need help finding a compatible head unit for a non HK 2018 STi.

I purchased an aftermarket (Junsun) android head unit for my non-Harman Kardon 2018 STi and for whatever reason I cannot get any sound from my speakers whatsoever.

So I’m looking to see if anyone has purchased a head unit that works as a plug and play replacement for the stock head unit in a 2018 STi.