Same issue, iPad2 64GB Wifi+3G, updated to iOS 9.13 last night successfully, but cannot re-activate the device to start using it. Just says:
"Could Not Activate iPad.
Your iPad could not be activated because the activation server is temporarily
unavailable. Try connecting your iPad to iTunes to activate it, or try again in a
few minutes."
Been trying to re-activate it for the past 24 hours now to no avail. It's completely bricked.
Connecting to latest version of iTunes via USB gives the message:
"iTunes was unable to verify your device."
I have tried restarting iPad many times, restarting iPad with iTunes fully updated and loaded, removing 3G SIM card during restart, but nothing I try works.
I use the iPad2 standalone (I don't have a Mac and rarely use iTunes on PC), so I really, really want to avoid a restore if possible. It's been a year or so since I made a manual backup.
The nearest Apple store is 35miles away but I have no transport.
Apple, can you please make a statement as to what is being done?