blue too connection to I phone Mobil link broken

Had it all working after month end Wahoo update

Using Ant+ to wahoo trainer, Bluetooth heart monitor connected to I phone with Mobil Link on windows 10 pc.

After 8 weeks of fighting systems trying to have full connections got it all to work,  next day no Mobil link, and  I can not  get get the bluetooth symbol on application to turn on or connect to the mobile link

about to give up any suggestions,

Jim.

j.sleeper@yahoo.com