The maximum quantity allowed for purchase is 0.

I can't even add a screen shot here, it doesn't let me?

mhsjaber wrote:
How do i even add a screenshot here, it keeps asking for a url ?

You cant upload a photo to the nop Website
You need a photo stored somewhere else on the web that has a URL
One option is do you have a website with a domain ?
Put the file in http://yourwebsite.com/images/uploaded
Alternatively there are sites out there that host images See https://www.google.com/search?safe=off&q=free+image+hosting

I'll add an image on my temp website url later, thanks

Here is the image I hope!
http://beta.shophere.co.uk/en/cant-add-to-basket-as-says-0

Yes I see images for something else but you did not answer the question
What value is in the field "Maximum cart qty" ?

I had to change the inventory from "don't track inventory" to "track inventory", now I see it, I see 0, so changed it to 1, but i'm not bothered about adding stock levels, I was hoping to remove that. But still no add to cart button once I click on the product ,

Make sure "Disable buy button" is not ticked
Edit product - See under prices

Button defo not ticked. Still no add to cart once you click on product, it's there on homepage with add to basket, but when you click on item for more details, no add to basket.

Is it standard v4.2 or is there modifications made ?
What theme are you using ?