Shopify store not working on iPhone

[Zentopias]

Hello! I have recently finished setting up my shopify store and was running some tests to see if everything was working properly. During one of these tests, I noticed that on my iPhone, whenever I clicked to add the product to cart, nothing happened and I was sent back to the website's home page (and the product wasn't added to my cart). Another problem that happened was when I accepted the upsell offer, in which case it only added to cart one of the items. These problems don't seem to happen on an Android phone or opening the website on PC 

[Shay]

Hi @Zentopias 

Thank you for those details and reaching out to our community forums for help with this issue. It sounds like an app or customization to your add to cart flow has not integrated properly, causing issues for the customer. In this case, the first step is to find the source of the problem. We recommend going through these steps to narrow down the possible cause:

• Test in a fresh copy of your current theme. 
• Disable/Uninstall any apps that currently affect the add to cart flow (upsell, post purchase, discount apps, etc) then test the flow.
• Reenable the apps one by one, testing the flow after each app is enabled. 

You may need to contact some of the app developers for the apps you are using if it turns out one of their services is affecting your checkout. You can use the support option in your apps list next to any of the affected apps.