That is fine.
Provided its connected to the extender, it should work, but as I mentioned before, extenders reduce the bandwidth by about 50%, so you may get choppy video and audio breakup.
So far the issues are
Sometimes the notifications have been immediate but several occasions of delays of 3 minutes for notification of motion at the door to my phone
Also delay in Live view appearing
My daughter who lives in a very rural area with very poor Wi-fi recommended Ring to me as theirs installed without trouble and operated without issues
I have yet to test the audio
To date the video quality has been reasonably good
I will have to speak again to Ring because as things presently stand their product is of little use to me