SRAM AXS pairing issue.

So, when I pair one of my rival axs shifters with the rear mech, the other goes out. Started last week after I changed a battery in the left one. Anybody know a solution that doesn’t involve shimano?

Have you re paired all devices to the master? Is the firmware up to date on all devices?

Thanks, I “forgot” the bike and reinstalled it then it all worked.

Nad it’s always right side first on pairing.