Renew my car insurance/roadtax today. So, also try MyJPJ App.
During registration, stuck at "no siri lesen kompeten tidak sepadan".
A Google search shows me this thread. So, I want to share resolution.

The serial number is mixture of 8 random alpha-numeric big small cap, and printing is rather small.
i.e. high chance to read wrong.
I took a picture then enlarge it only to realize the '8' is actually B.