I need help setting up a Hotspot with Alfa R36A for home WiFi/Internet

This may not be the place to ask - but I'll try anyways. I have a motorhome parked at my house (my storage location). I'm trying to setup a Wifi Hotspot for my motorhome.

I just bought the Alfa R36A adapter and the Alfa AWUS036NH (antenna/receiver). This is setup inside the motorhome with the antenna/receiver suction-cupped to the window pointing toward my house. Alfa also sells this as a package with a different antenna called the "Camp Pro 2". https://store.rokland.com/collection...-access-points

I want to be able to connect to my home's the Internet from inside the motorhome (I have a Laptop and Smart TV/BD player in the motorhome that has Netflix and other streaming apps built in).

Inside my home I have AT&T DSL with their router/WiFi device. I get a weak Wifi signal inside the motorhome (and I can connect to the Internet with the Laptop's Wifi by connecting to the AT&T Wifi network and logging on with my AT&T SSID and password. Bu this signal is weak.

So I bought the Alfa system to pickup the weak AT&T Wifi signal and to pick up the free WiFi at the campgrounds I visit.

The problem I have is that the Alfa sees the AT&T Wifi and connects to it, but I can't get the Internet to connect. I can only connect to the devices on the Alfa network (by Wifi and ethernet).

When I setup the Alfa I choose "set as Hotspot" then the Alfa scans and lists the networks it sees. I select my ATT network and then enter the AT&T password in the setup. The Alfa has its own SSID and password. The Alfa uses 192.168.36.1 for the router and then assigns IP addresses in the 192.168.36.xx range. When I log onto the Alfa network it connects and all my local devices (TV) which get a 192.168.36.xx address. So those devices work fine over the Alfa network, but the Internet will not connect.

I asking if anyone has any experience with the Alfa or any suggestions to try. I plan to call tech support but they are closed when I get home from work and on weekends so it's not easy to get to them (I may just need to take a day off). It's also possible the Alfa device I just bought is defective.

I guess the way the Hotspot works, is that when I log onto the "Alfa network", the Alfa then automatically connects to the AT&T network (via WiF) and sends the AT&T password back to ATT system (?) to allow the Alfa network to connect to the Internet through the AT&T DSL/router/WiFi. I don't understand this part. Maybe the Alfa is not transmitting the password back to the ATT system.