Shopify Store shows that product is sold out even though there is stock

Technical Q&A

Topic summary

A Shopify store displays products as “Sold Out” when variants are selected, despite having inventory available through Zendrop dropshipping integration.

Resolution Found:

  • The original poster resolved the issue by updating outdated code in their store theme
  • After the code update, variant selection functioned correctly

Ongoing Issues:

  • Multiple users report experiencing the same problem
  • One user shared a video tutorial demonstrating a workaround specifically for stores using third-party dropshipping apps

Key Detail:

  • The issue occurs at the variant selection stage—products can initially be added to cart, but show as unavailable once a specific variant (size, color, etc.) is chosen
  • Shopify Payments setup status does not appear to be the cause
Summarized with AI on October 25. AI used: claude-sonnet-4-5-20250929.
1

Hello,
I am new to this and I have just made a Shopify dropshipping store using Zendrop as a supplier. The problem is that when you go to the product page, you can add the product to cart but as soon as you select a variant it says “Sold Out”. Does anyone know why this is happening?

Link: https://969261.myshopify.com/products/portafrost-waist-fan
I do not have Shopify payments set up yet if that has anything to do with it.

2

Never mind it works now I just used outdated code so I updated that and now it works fine.

3

I have the same problem but how do you update the code

4

I am facing same problem

How do I solve this

5

If you are using any dropshipping 3rd-party app and facing this issue, use the following hack that worked for me.

Video