xDrip+ Stuck on Collecting Initial Readings - "No data received in last 21 minutes"

I have been using my Samsung S10+ with a Dexcom G5 transmitter but recently it stopped working. The xDrip screen reads “Collecting Initital Readings” and the hour glass is stuck on the “Received Some Recent Data”… it also says “missed last reading”…I have stopped and restarted the sensor 2x. Does anyone have any suggestions?