Not very scientific
Subscribed to Popsci via snail mail and received an invite by email to enjoy iPad/iPhone access.
Downloaded App as directed only to be caught in a loop asking for subscriber documentation that Popsci gave me: account number, name address etc.
To date have not been granted any online access.
Dan
McMinnville, Oregon
Home of the Spruce Goose
Dan in Oregon about
Popular Science, v5.3.16