I would suggest uninstalling it first. Then do a hard reboot (battery pull). That should "fix" the screen issue.
Next I would reinstall the BBAlerts program and DO allow it to access the phone data. It's trying to get to the phone logs to accomplish part of what it's supposed to do. It's not tracking your calls or anything, but since it's supposed to alert you when you have a missed call if you don't allow it to access the phone info then it can't do it's job.