Separate names with a comma.
4 years as staff member, it is amazing =D
It is the only way that I know ;)
Profiles are seperated, so you can delete the new created profile if you didn't want to create it.
I have tested and it creates a new profile.
You can using /coopadd username ;)
Hey, if you want you can disable the profile viewer (so you will not get the GUI anymore by clickling on players) in your Skyblock Settings...
Hey, you can report this bug at hypixel.net/bugs (be sure to select the Skyblock Game ;))