Create user using ssh

Just a quick question on how to make a new user without using the web gui,
So far i have created a new users (useradd person -p person1 -G share) and added the name to /etc/user_list however i still cant log into the account using monsta ftp (which i use for every other account)

any tips ?

See the following post which details how to add another administrator via SSH, the process should be similar for non administrators. Note unknown if the following will work on the newer v2.x gen 2 My Clouds.

no this doesn’t seem to work.
also using the original MyCould 3Tb