Can't buy individual issue – Outdoor Photographer Review

I can't buy the current issue (June 2017) I keep getting an error pop up that says "Purchased Failed. Please try again". I have bought past issues with no problem and I have no problems buying from other photography magazines on my iPad so this is an issue on their end. I've contacted them via their active Twitter account but they never replied. I guess they don't care if there is an issue with purchasing their product. Glad I didn't buy a subscription to their mag if this is what I can expect from customer service should I have an issue. The other photography magazines I get are all based in England and wouldn't you know it, it's the American company I get crappy non existent customer service from, what a surprise ????
Review by Pudgy Penguin on Outdoor Photographer.