I was gifted for my birthday, December 2025, the Wahoo Kickr Core 2 with Zwift Cog and Click.
The initial connection of the clicks failed, i changed the batteries for new Duracell batteries and they immediately showed up in the companion app and i performed the firmware update.
Over 3 days i performed 3 different rides, no connection problems.
Yesterday i was due to take part in an event.
I logged into Zwift on my Mac and the only things not to connect were the clicks. I logged out restarted the Mac.
While waiting i opened the Companion App, Clicks connected (Already showing 30% battery use on the left click and 20% battery usuage on the right click) (image provided)
I checked there wasnt a firware update needed again and all seemed fine. (image provided)
I logged into Zwift again on the Mac everything connected except the clicks.
I logged out of companion app and restarted my phone.
I logged out of Zwift and logged back in.
Clicks didnt connect.
The event had started by now so i had resigned myself to missing that.
40 minutes of various attempts to get the clicks to connect and nothing happened.
Eventually i went and got the other 2 new Duracell batteries and started to unscrew the battery holder. As i did the left click ‘blue light’ was flashing and went solid blue. I screwed it backup.
I started to unscrewed the right click the ‘blue light’ was flashing and then went solid, i screwed them back up. (Image provided)
I looked at Zwift on my Mac and they had now connected.
I began an open ride in London and the left click would shift down but the right click wouldnt shift up.
I restarted Zwift everything connected, i joined a ride in Watopia both Click’s operated as normal and i cycled alomng with everything working fine for 90 minutes, but 1 hour had passed of me trying to get things working and an event i wanted to do was long finished.
This morning at 06:30 i logged into Zwift to enter an event at 07:00, can you guess what happened?
This time to try and join the event i immediately began to unscrew the battery holder, nothing happened like yesterday. I inserted new batteries into both click’s, neither would connect to the Companion App or Zwift.
Another event missed, another connection error.
So these Click’s connected fine for the first 3 rides and now they are flaky and cannot be relied upon to enter an event. There has been no changes on anything hadrware related.
Other than the Wahoo trainer and the clicks (Both have firmware updated) my hardware is
MacBook Pro M2 chip, Sequoia15.7.3 (24G419)
Samsung S25



