WiFi booster recommendation?

I bought a Ring 2 this week since Amazon Mexico was practically giving them away. It's been a rocky start, and one of the issues I'm left with is that my 5GHz wifi network has connection speeds of 70Mbps at the front gate and the slower network I forgot I even had has speeds of less than 1Mpbs. I know the Ring 2 is an older device, but it never occurred to me that it might be so old as to not be able to connect to my faster network (or that the expectation is that everyone keeps their modem right by their doorbell!). I have a large property, with the front gate where the doorbell is located being right at the street and then my house being set back. My modem is about 50 feet away from the front gate way at the back of my house in my home office. My house is concrete block construction, so WiFi outside of the office is poor. I have a TP-Link WiFi booster that gives me great 5Ghz coverage through the whole property but not of the slower network. By moving the TP-Link to the front porch, I have just enough signal strength on that slow signal for the Ring to work great when the wind is blowing right. I'm trying to figure out my options, if any, for boosting that slower signal without spending a lot. I do have ethernet cables near the front door that power that Apple TV and cable box, so maybe there is a device that could tap into that connection? I'm asking this question here because when I ask for folks who generally know about boosting WiFi, I keep getting suggestions for how to spend a lot of money upgrading my home WiFi overall when that's not the problem. Surely someone else who has a Ring 2 has had a similar issue and found an inexpensive solution? :crossed_fingers: Thank you, Rae