Flex live USB won't connect to my home wifi, only my phone's hotspot

I'm trying out the live USB on a Surface Pro3. I know the wifi chip is supported as I can connect to my phone's hotspot. I was able to connect to my home Wifi with Windows on this laptop, but attempting to connect my home wifi gives this error

The only thing I can think of is WPA vs WPA2 vs WPA3. I've tried changing my wifi between WPA2 and WPA2/WPA3 modes, not going to set it to WPA though.

Any tips?