Device WAX610 not recognized in Insight

Hello,

I removed from a group of my Insight manager an AP WAX610 for adding to an other group.

Now device is alway "waiting connection" mode! and inthe phone application Insight said "Device not register"!

Device is declared on my device list, I have licence for device.

• I have 5 active licences and 5 devices
• only 3 devices are affected to licence!!   why ?
• 4 are connected ?
• 5 are declared in list of my devices 
• 1 with message "not register"

Please can you help me 

Thanks before hand

Jerome