When I got my trailer, I was kind of excited to use the Wifi Ranger. After all, I have 35+ years in IT, including large wifi deployments. I tried and tried to get it working, I gave Wingard a call, and they suggested I take that one out and install their newer upgraded one. No thanks. On a whim, I tried it again last weekend while we were on a trip and I had the same problem, it'll start to configure then it crashes.
What did I do? Well, for simple situations, I just use this and I absolutely love it.
https://www.amazon.com/gp/product/B0BPSGJN7T
It's really fast, they keep it updated frequently, it supports both VPN client privacy services such as PIA VPN, NordVPN, etc., and it also allows VPN setup back to my home. It has family web filtering built in, multiple SSIDs including one for guests, the works.
For harder to reach situations such as when we are at music festivals and they only have one AP on hundreds of acres, I use a setup similar to this. If you aren't trying to reach an AP in a park that's hundreds (or more!) of yards away, this would be overkill for you.