Why my devices are disconnected and unable to manage?

It may due to APNS expiration or incorrect Please go to “Apple” > “APNS” > “APNS Info” Check if the current certificate is expired.  If yes, please follow the instructions to update If no, please go to “Device” > “Device Management” Tap on the “Device Name” which is disconnected In Device Detail page, scroll down to “APNS Cert UID” If…
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