Hi, <<< Not a tech or anything, but if your just getting to know windows-10 you will find out quick it isn't really peripheral Device friendly...
Chances are your USB Charger +Plus software and device are fine, and will be until device lifespan ends. That original ChargerPlus++ is all it will ever need.
Windows-10 in the begining had a huge USB problem were as certain devices that plugged into it, destroyed the computers, <<< Really. So, Microsoft reworked the entire USB framework , which is hidden and always will be, located under Universal Controllers, in device manager, i could talk you through how to unhide the Hidden ports, through power shell but that would take way to long,
Trust me, if you see a list a mile long , you will want a remote Live Help Connecting through a shop or something ....
Basically what im really trying to say, the S8 probably isn't recognized properly through windows-10, you didn't mention your using windows-10, but im guessing that based on other OS's, this wouldn't be a problem.
Hope my input helps some. You can try to get ahold of tech support and try to get a tech team to look into it, but it might be a known Win10 issue that cant be fixed.