WiFi no longer working in v17

Hi -

My wifi dongle was working fine with the previous version of OSMC, but now it fails to connect.
If I try to connect from My OSMC, after selecting my SSID it shows the OSMC logo looping for several minutes. Eventually, it asks for the password, then hangs for a few more minutes until it fails.
From the command line (using connmanctl) it just never seems to get to ask for the password, and the status shows as In Progress.
See logs here and with debug logging enabled here

Please help!