How to connect Didi Connect WAN VPN Edge and Cisco IOS Router through the VPN tunnel

Good day!
Please help me to configure the VPN tunnel between the Digi Connect WAN VPN Edge and Cisco IOS Router.

On the site I found a statement:

but in the menu of the Digi no such partition (starting from the 4th paragraph of the third section ) , tried to set the parameters specified in a submenu Virtual Private Network (VPN) Settings - tunnel has not earned …

I would like to see the instructions for setting up a VPN for specific equipment (Digi Connect WAN VPN Edge) if it is possible to raise.

Eugene .

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