There is an issue with Gingerbread 2.3.3 that prevents Mobile Signal Widget PRO from working correctly. There is nothing I can do to fix this; the problem is with the Android API.
PRO version features:
5 appearance options, including transparent background.
Tap to configure - Change widget appearance without re-adding.
V1.2 - Fixed operator and signal strength not returning.
New 2x1 widget featuring separate bars for signal and Wi-Fi strength.
More options, more widget sizes and skins!