I don't think pasting directly work. Only way that seems to work is to upload your pix elsewhere then use the insert image button on the Wazua editor. Used to think that the absence of a means of uploading pixes directly to Wazua was a flaw of the Wazua system but given their not so (in)frequent outages it might be a ploy to save on server space.
He who can express in words the ardour of his love, has but little love to express. - Petrach, Son. (That men by various ways arrive at the same end. - Montaigne, The Essays of.)