Impulse theme some prices not changing with different quanties

[jtsjlj140505]

Hello, suddenly some of my product prices do not change when different quantities are selected.

Example here-

https://studionellcote.com/collections/envelopes/products/wild-spirit-envelopes?variant=42355881377983

Others have remained as they should and changed with quantities.

Example here-

https://studionellcote.com/collections/gatefold-invitations/products/eucalyptus-gatefold-wedding-invitation

Does anyone have an idea of what may have happened?

Thank you in advance!

[Dan-From-Ryviu]

Are you using 3rd party app for display that price? Default price of theme changed when you change Quantity but 3rd party code to display price is not change. You may need to contact them or check settings of that app to solve the issue

[jtsjlj140505]

Thank you for replying. I am using apps for other things but not the variant pricing, that is just Shopify. I just cannot understand why it is working for some but not others