Likely, the signature pad has the wrong driver installed. You need to go into the sigplus.ini file and adjust it to the proper pad setting. (typically in the windows system folder)

Below is an example of the sigplus.ini file.

[Tablet]
TabletComPort=1
TabletType=6
TabletLCDMode=0
TabletModel=SignatureGemLCD1X5   <-------- This is the line that needs adjusted. We normally use the SignatureGemLCD4X3 signature pad to correct this situation.
EnableColor=1
Win95USB=0
ImageScreenResolution=1
UseMultiUSB=0
DisableMessages=0