I use shellinabox pluging to connect remotely and revise/correct some things using shell, and think taht two additions to webGUI are wellcome:
1- add the posibility to select your desired SSL cert and not use default ( so I can select my let's encrypt cert that really works on externall conections and is not banned from modern explorers).
2 - add that you can access by path and not only by port; eg: https://myddnsprovider.net/shellinabox is better for me because in my work port are banned and I can´t access to https://myddnsprovider:4200