Stick up cam poor RSSI

Hi I've posted before on here , I have a stick up camera in my garden but the RSSI is really poor (-73). I've read alot of reviews about the chime pro on Amazon, some good, alot bad but possibly thinking about getting one as if it doesn't help the signal I can send it back so no harm done. Just a question, I've read that you have to connect it to the ring chime network for it to work well, what's that? Will it interfere with my normal wifi?