Settings lost after reboot

Brand new installation on Raspberry Pi B, using the screenly custom image sprint 10, i believe, it’s hard to find the details after the install.
Configuration went fine, I’ve added the assets that I want to use, but every time I reboot if resets the WiFi connection.
I go through the process every time, and when logged in, the assets I’ve added are still there, although the default first boot assets have re-added themselves, despite me deactivating (but not deleting them).
I’ve booted into command line and run raspi config and still doesn’t seem to work. Everything I do just seems to reset the wifi connection…

Any ideas, on what I need to try, please?
Thanks
Chris