Review on Audio Injector Zero Sound Raspberry by Edwin Kreps

What happened to the installation and user manual? Based on other reviews I think this could be a good RPI hat but the support is terrible. Now I have to rummage around the internet as others need to find documentation (if it even exists). I would really like to know which pins on the RPi this hat is attached to. EDIT 1/6/2020: I finally got this hat installed and working. The installation scripts and minimal instructions don't mention that the SPI and I2C modules need to be enabled. If you don't have enough RPi and Raspbian experience, I don't recommend this hat. EDIT 01/04/2021: The support has become much better. The person behind Zero's development and support is now much more responsive and open.