I see you're having some trouble with your equipment. Have a look at this link it will help you reset your Slingbox.
The more details and information you can provide, the better we (the forum community and Sling Media) can help.
What Slingbox model do you have?
Are you using Slingplayer app or watch.Slingbox.com?
What operating system, version you have on Mac?
Sling Media Support