We each have our training base (vortex and flux2), each our account in zwift and each our devices. Unfortunately, we cannot participate in zwift at the same time. The bluetooth connection does not work at the same time. What can I do to fix it?
Have you searched the Forum and/or the internet? I believe there are some threads on how to connect multiple devices in the same room at the same time.
It may be as simple as moving them further apart if they are too close together. The bluetooth signals are probably competing with each other.