I have turned the subscription on and off, then checked for correct settings. Uninstalled and reinstalled the app and I think that it may be OK now. I won't be sure until the next issue comes out. Apparently I made an in-app purchase of the one that would not be recognized by my subscription and paid 4.99 for that stupid mistake.
Live and learn. I'll let you know if the next issue is delivered as it should have been this month.
Thanks for all your help,