Slate goes off when connecting

Hi GLI watch out, slate snaps and goes long period of reboot when trying to connect to openvpn loaded. I have two pieces and this happens to both. I am using the latest update testing firmware. Please check and see why this snaps and long period of rebooting when trying to connect

Did you use 5V/2A power adapter? It might caused by power supply.

Iuse samsung galaxy adaptor 5v/2A

It will reboot immediately when click on Connect button? Could you please take a video?