Jijo thanks my friend! I worked it out. Write Memory comes at the end of each operation to add a password, IP, etc. Not sure why my IP changed as I did a write mem after this last time, but it seems stable now. I did a write mem after my inline power activation this time around and this seems to have stuck. Just a thought for Ruckus...it would be good if all of this set up functionality was available from the web management interface as its a bit of a fiddle to need to use CLI to set this up.
Anyway. All fixed now and many thanks for your patience! Peter