Sensors connecting but not working

Hi there I’m having issues as on my tv I am connected with all my sensors (kickr V6 polar Bluetooth sensor) I have the option of Bluetooth and wifi except for the polar.
My issue is all my sensors show up connected but quite often they don’t work and I have to change from Bluetooth to wifi or vice versa.
Or worst result delete the app and redownload which takes ages.
Is there any tips I can utilise to remedy this so I do t have issues moving forward. (And yes I have tried disconnecting Bluetooth from other devices first before turning in Zwift)