Double sided printing lost overnight

This morning after a restart overnight, I lost the ability to do any double sided printing, via Adobe. Before there were extra options between "Choose paper source" and "orientation" but they have disappeared - for both my printers - canon and brother both of which are physically capable of doing double sided printing, indeed did so yesterday.
There used to be another option via "Properties" of the printer - but this has disappeared too. - see below

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HELP.

What has happened and how I solve it?

Thanks. B