Wahoo Tickr disconnects

Since the latest upgrade my wahoo tickr is disconnectIng all the time. It is recognised at start up but soon disconnects. On two different PCs with the latest Zwift upgrade this happens. On my Ipad which has not yet updated the tickr hr monitor is ok. Other programs that use the Tickr Hrate monitor are fine, e.g Painsled, Elite HRV. Any suggestions please? This has just happened after the update, which is now mandatory. my Tickr is 2 yrs old. I don’t wont to stump up for another if it is a just compatibility problem, cheers.