For the several days I am trying to establish PepVPN connection between SOHO and B30, and nothing is working.
The SOHO is connected via WiFi WAN but for the testing reason I connected it also via cable, but with the same result.
I have an access to Internet but not to my PepVPN network.
I have another Peplink routers B-ONE, B20, B30 and do not have any problems with PepVPN.
Is there any different way to setup this connection.
Appreciate any input.

Do you have a public IP or DYNDNS address on the Balance 30 or SOHO?

Yes, all the routers have DYNDNS address.

Please open a support ticket for further investigation: