Sram AXS Blip Box Not Responding

Hi! My bike showed low battery for the shofters, I ignored it for a couple of weeks because I was only using it on the trainer… I charged the derrailleur battery, but it was still not working. I then checked the blipbox and its totally dead, I press the AXS button and it does nothing it doesnt show any light or anything… Tried two new CR2032 batteries but did nothing. Any idea??

Thanks!

Use the app , but when you change the battery you likely just need to re link, hold button on rear derailer, once blinking press shifter to connect . Now you rolling