If you have a device running Good Messaging (formerly known as GoodLink) and it stops syncing, the first thing to do is make sure you have a data connection by attempting to go out to an internet site (such as www.yahoo.com) from your device.  If that doesn't work, then contact your wireless provider, because your data connection is not available.  If you can get out to internet sites, you probably just need to reset the Good software.  Here are instructions for doing that.

1. On your wireless device, go into Good Preferences | About Good Mobile Messaging
2. Type in “debug” without quotes.  You will not see the text on the screen as you type, but it will open a hidden command prompt.
3. When a command prompt window opens, type in “reprov” without quotes and press the enter key.
4. You will be prompted that this will erase all data from the handheld.  This only refers to data synced with the Good software.  Type in “yes” without quotes and press the enter key.
5. Your device will restart and the Good software will resync all of your emails/calendar/contacts/etc.