app
Resumes the RealityCheckMessage call using the time saved from appDidEnterBackground. check the method for additional information.
So if the app was in the foreground for 20 minutes originally, then enters background, then
foreground again, then the next RealityCheckMessage call will be in an hour - 20 minutes = 40 minutes. This method won't do anything if the user has not logged in yet and there are active delayed RealityCheckMessage calls