Slow internet

After reading your response, I did some more troubleshooting.  I found the extender setup process seems to go smoothly all the way until the end.  However, the last step is to connect devices to the extender.  That doesn't work and my screen goes to a page that says I am not connected to it.  Even though the setup appears to have succeeded, I can't get an internet connection at all and I can't connect to the extender using the specified internet address.  The low speeds I was getting on my iPhone was not thorugh the extender but was simply my iPhone 4G internet connection.  This was verifed by trying to connect to the extender using my desktop computer and iPad.  Even though the extender is broadcasting the 2.4 and 5GHz bands, I can't connect to them on either device.  Since I can't connect to the extender,  I can't answer your questions about the status page screen shot and the firmware version.  Regarding the location, there are no walls or obstructions between the router and the extender; it is just a 30 foot straight shot across my house's open floor plan.  Besides, the extender worked perfectly for 2 years with the old router so the location of the extender is optimal and can't be an issue.  I might be able to troubleshoot a little further by temporarily connecting my old NETGEAR 6100 router and then setting up the extender to see if it functions. If it does, then it seems to confirm that it will not work with Spectrum's new router.