Usually, the golden tax bill is space information, and this problem will not occur. But if the second decimal place of each invoice can't be typed, it must be a software problem, and you need to consult the technician you bought. Generally, their company's phone number will be posted on the host computer to consult the solution.
If only the last point of the invoice can't be typed, there may be something wrong with the print head, or you may have printed the invoice in the wrong place.
I wish you a smooth solution.