Amazon recently stopped selling magazine subscriptions, trying to rope people into their service where you can't own anything - just keep subscribing. Anyway, I can subscribe to the magazines on the Analog website and they provide both the epub and pdf versions for downloading. But the Viewer does not properly display the epub. If I upload the epub to my kindle via Amazon, it displays perfectly.
You can try it from here:
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Maybe there's a setting in the viewer that I need to set?
Thanks.