We are having terrible problems with this.
I use all ant+ and it works faultlessly most of the time. My 14 year old son wanted to join zwift as well so we got him a wahoo speed and cadence sensor and a polar heart rate monitor as we couldn’t afford more ant+ kit.
The poor lad is just about to give it all up as every time we do a joint ride it ends up with me pedalling away with no problems and him not being able to initially sync or it starts off ok and then loses connectivity after a minute or him getting into a ride for 5-10 minutes and then it all dies.
We’ve tried using the bluetooth on a Motorola G, a Samsung Galaxy S5, an Ipad 4th gen and an Ipad air. The zwift app crashes on the Motorola G, doesn’t work on the Galaxy at all and works best on the Ipad 4th gen.
Monday night he tried to ride the SUB2 group and got a few minutes out of it before it died and he went off annoyed. Tuesday I couldn’t get him to go near it and last night he tried to do an ftp test and again only got a few minutes out of it. Then he did a normal ride and it worked without a problem.
We also have an RS Components supplied Bluetooth BLED112 dongle which we’d much prefer using instead of collecting all the mobiles and tablets from around the house every time he wants to ride. Would that not be a better option like the ant+ dongle.
Either way as it currently stands it’s causing no end of upset in our house. I might do a timelapse video of my son trying to get it working, buzzing around the bike, hand pedalling the sensor awake, tablet in one hand, wireless keyboard in the other, looking really unhappy.
If it’s not improved soon I think we’ll have to go out and buy all ant+ kit and sell on the bluetooth kit. It’s going to be a hard sell to my wife who only hears how annoying Zwift is from my son most of the time.