Netgear r7000 Server and Mikrotik client

Hi, I have a netgear r7000 and mikrotik. I would put the netgear as a server and as a client mikrotik.

The problem is that in shaping the netgear not let me put a user in the VPN and to connect as a client with the mikrotik, I need a user, will not let me put it blank. Has anyone put this configuration?

VPN log in as a user tells me ‘[UNDEF]’.

Thank you.