For the past two or three weeks, the Prayers and Rites sections of the iBreviary have been missing from my HTC One Android smartphone.  This problem began suddenly for no apparent reason.  It lasted for about a week and then these two sections returned. Now they are missing again.  Has anyone else had this problem?  Does anyone know how to fix it?  My iPad iBreviary application is fine; nothing is missing there.  Thank you for your help.