Mobile Hotspot not working with two Wi-Fi adapters

I'm having a really weird problem. I have an external USB long range Wi-Fi adapter that I use with a Microsoft Surface Go. I connect to the network I want to extend with the internal Wi-Fi adapter and have Mobile Hotspot bridge to the external adapter. This has worked fine until today. All of the sudden the external adapter doesn't come up as an option when using Mobile Hotspot. However, if I connect to the Wi-Fi network I'm extending using the external adapter, then both show up in Mobile Hotspot and I can bridge to the internal Wi-Fi. So, it works but only in the opposite configuration of what I need. I'm on a trip and of course it's not working. I tested it a few weeks ago before I left and it worked fine as usual.

Does anyone have a suggestion on how to fix this?

Thanks!