"can i log in as root via browser?"
Unfortunately not, you could do this over ssh however using the WAN address if you have another box connected to the WAN side of your server. In the remote access panel, you will need to enable:
Secure shell access = external
Allow administrative command line access over secure shell = yes
And use a terminal on a Linux box or Putty in Windows to access the server - log as root.
Checking from the console may be easier, there is not a lot of information to copy and post.