Existing 1password user, new install on win11 - chrome extension enabled - welcome page is blank

It was really strange and very frustrating. However, whatever was wrong has 'fixed itself' ! :-) This morning it all seems to be working fine. Maybe there were software updates going on in the background at the time - this is a new laptop running windows 11 and there seemed to be a lot of 'independent' (i.e. not initiated by me) activity over the first couple of days of use.

All's well that ends well :-)