Hi ive had an issue with Running. Everything working correctly, runn detected in pairing screen and reporting speed. Everything working until the banner dropped and then zwift had no speed/cadence. I was able to calibrate the run from the pairing screen and zwift picked up the speed, but in game no speed reported.
I reset the Runn and re-paired more than once. Zwift only worked once i restarted Zwift.
I have a video on youtube, but i cant post the link.
Do you post that because you genuinely think it’s useful, or just to wind me up with all the notifications I get from it? 
LOL! No! I post that in lieu of “please post more details about your Zwift setup blah blah blah…”
For real though - it is extremely difficult to help someone on the forum without knowing details like OS, app version etc. I imagine that’s why you created the post - there are only so many times you can repeat the same message before you just want to turn it into a wiki and link to it.
GPU: Quadro K620
CPU: Intel(R) Core™ i5-2500K CPU @ 3.30GHz
Memory: 8 GB RAM (7.95 GB RAM usable)
Current resolution: 1920 x 1080, 60Hz
Operating system:windows 10 - latest update installed
Zwift version: 1.30.0 (105539)
Companion version: not sure, regularly updated by android/play store. but I was not using it at the time.
Both Ant+/bluetooth
I have a very good video recording of the problem but I can’t share here. (youtu.be/bV5YbGkgATs?t=2816)
Thanks!