L2TP client vpn only works with admin login creds

have two SOHO units at customer sites, I can only get the L2TP vpn connected if the setup is done with the admin login creds. 8.1.1 build 4994
Is there some limitation on the soho that I have missed? or a feature key of some sort I have missed?

kinda have this figured out. Seems as though the password I was using for the remote access username didn’t fit the requirements. However, according to what is written in a balance manual that I read, the admin password doesn’t fit the requirements either. So…what did work is a password that is 10 characters, combo of lower case letters and a couple numbers.