First, WebDrive is GREAT software! I test more than 5 different software tools to access cloud storage(s), and WebDrive have best combination of functionality and interface. 'Single user mode' is incredible!
Second... See topic title. At this moment Hubic is best storage provider in terms 'price per Tb'. Will be nice, if You add it, or, at least, check for possibility...
Hubic support has been added as a feature to be considered for inclusion in a future version of WebDrive; there is no current timeline for addition.