Unreal False Overspeed

Good morning.
It Tonight our client called the support ("customer support" would be the correct phrase to use) because the overspeed report don't doesn't ("Don't is a plural verb, and "doesn't" is a singular verb.  Since "report" is a singular noun, it needs a singular verb) work very well. It has some not reals false records.
Our client says this is very critical because overspeed could generates generate resignation for drivers.

What I can do to fix this?

Unfortunately, I don't know the answer to your question about overspeed! I hope my English corrections help you somewhat, though.  The main thing I noticed that you should focus on is singular verbs vs. plural verbs.  This is a common mistake that non-native speakers make, but with enough hard work, the verb forms can be learned! 

Good job, Rafael, and I hope you are able to correct your problem soon!