Many thanks Jockle, it's a SOB to remove because for some reason I can't fathom it doesn't appear in Add/Remove. The instructions I've received from Zinio are convoluted and a tad beyond me. I've got CCleaner installed and, once again it doesn't show Zinio, but shows Adobe Air which is mentioned in the Zinio so-called removal instructions, thus I'm unsure whether it's connected and if I should remove it. Wish I'd never installed the damn thing.
OnePlus 5 review