I tried and run your app on an unrooted Huawei P30 and Honda CR-V V car, both on 3.5 (stable) and 3.6 (beta).
I cautiously followed each step of the tutorial but still remain unable to have your app work : my car says "incompatible smartphone" (when it does work with the standard AA).
Between each attempts, I cleared data, deinstalled, rebooted, reinstalled...
Any idea as for how I can troubleshoot the issue ?
Please help as I am stuck here
Thanks a lot in advance, BIOMAN