Camstick

I have a 1982 VW Vanagon with a 2.5 Subaru conversion. Need some help getting my OBD 2 scan tool/Veepeak dongle to connect with the ECU. The van came with a Veepeak OBDCheck BLE and on my phone I am using Car Scanner. Given the van came with the Veepeak dongle, I am presuming that at one time it all worked. The Veepeak dongle does work fine on my 2011 Dodge Ram. I have checked for 12V at pin 16 and ground at pins 4 and 5, all good. I do have an aftermarket radio but I can’t see it connected to any K Line; my voltage at pin 7 is less than 9 V so even if that was the case it would apparently be fine. I have replaced the OBD 2 port with a new one to ensure the pins are connecting well. Would really like to get this working for both diagnostics and dashboard instrumentation. Any thoughts?