Printing from photos

I am trying to print from my photos by air print. It always used to work fine but the option to print is no longer in the list when I press the rectangle with the arrow.

Please can someone advise. Thanks.

I have received a reply which I wish to respond to but it keeps saying that my session has expired. I keep logging in but it will not send my response which is:

It is only printing from photos which is a problem.

My iPad supports AirPrint (eg when I print from an email attachment etc)

but there is no option to print when I try to print from photos app

Please tell me how to find that option in photos. It always used to work.