We are all set up and configured with the main router which is also TP, and now have the Tp ink extender 850. The extender connects all our other devices, including android, phones, laptops, computers, windows and MacBooks etc. Just the 1 macbook pro running yosemite is not connecting. It finds the extender and requests password which I enter, however it tells me the password is incorrect. ALL the other devices have the same correct password. This one is being refused. I've updated everything, disconnected, reconfigured etc etc. Same "wrong password" message... Any bypass or alternative setting suggestions to connect this Macbook to the extender?