NetGear Extender AC1200 Model EX6150

I recently changed internet providers and got a new router.  How do I connect my extender to the new router?  I've tried going the WPS route and it doesn't seem to work.  Should I do a Factor Reset instead?

Thank you for any help you might be able to give me.  Not super computer savvy and I've spend days and hours trying to find help on the NetGear site.