Not enough information here to give a complete answer. But if your network is setup such that your addresses are like: 192.168.2.x (2 is important here), then there is a conflict with the usb wifi.
I have/had same issues. There are several fixes mentioned for earlier firmware, but changed with new beta firmware. My notes for this are I think in step 2 of:
But to make it easy to find, I also did a cut and paste:
EDIT: With new beta
Edit the file: /etc/systemd/network/usb0.network
to : Address=192.168.99.15/24