Are you getting any errors that could better explain the issue you are having? Maybe you could try to restart the device you are using, that helps in most of the cases. If that doesn't help try to reinstall an app and see if it works then.
But if you see any errors in the process, try to remember the errors (or take a picture if you're afraid you're going to forget) and post them here. This helps us in determining the underlying problem.
A like is always appreciated, but a nomination for BB Elite even more :-) You can also contact me on Twitter: @ndsmyter