Items are saying unavailable when my customers try to add to cart

[camdavis30]

I am having issues that's affecting my sales. I have a customer who can't add any items to the cart because it is saying unavailable. Then I have other customers who can only add 2 items and when they're trying to add the 3rd item it is saying unavailable. Please help

[Goldneye]

HI, can you please share a screenshot or link?

[camdavis30]

Www.thestatementcollection.com

[Goldneye]

HI, thank you for the link.  Checked on Safari and Chrome items and cart perform normally for me.  If a customer adds an item or items and leaves the cart then come back at a later time the cart needs to be reset (items removed from cart and add to cart again).  

[camdavis30]

It’s not letting them add at all