|"I can no l longer connect to the internet to set up the router."|
You are not on the internet to setup the router. Setting up the router gets you internet access.
You can not connect and configure the router via wireless. You have to do it wired first.
Doesn't appear you are following the routers manual. It tells you step by step how to configure your workstation to then connect to the router.
Answers are only as good as the information you provide.
How to properly post a question: