Ring Stick Camera not working with tp-link range Extender (Model #: TL-WA855RE)

I installed two tp-link (300Mbps Wi-Fi) range extenders in my home. Mainly due to very weak Wi-Fi strength for my front Ring Stick Camera overlooking my driveway. During the Ring setup.......the Ring System reflected that the tp-link had 5 bars strong in order to sync with the Ring system............however.......during setup......the Ring system lights were flashing Blue and Red (reflecting a problem). I reset my COMCAST router and the Ring Cam as instructed to do......which did not help at all. How frustrating!! It appears that other Ring customers are having the very same problems with the tp-link Wi-Fi extenders. All my other equipment (cell phones, laptops, etc...etc) are carrying a super strong Wi-Fi signal from the tp-link extenders. So.......I'm at a loss as to why my Ring Stick Up Cam in incompatable. Help!