Why does my subscription page show 'out of stock' on iPhone devices?

[urbanbaristas]

Hi, I have an issue with the subscription page only on Iphone Device. When someone subscribe with Iphone says out of stock for all my products. 

[Greta]

Hi, @urbanbaristas!

Thanks for getting in touch, I'd be happy to look into this with you. 

Would you mind sharing your URL with me so I can test it out on my iPhone to see if I get the same error? Also, which subscription app are you using? 

I look forward to assisting you further!