Subtotal not updating on pre-populated form via url

Hi - hope someone can help - I have form which is being pre-populated via url link.

The product is correctly selected by the link but does not update the unit price or subtotal until I manually untick/tick the product box.

(NOTE - you have to tick the 'accept conditions' before the payment section shows)

If I don't click anything in the payment section and just submit, then the data is updated correctly before it hits PayPal. But the customer never sees the true total

Is there anyway to force this update before submitting so the customer can see the updated price?

You need to disable the hide condition for your payment integration:

Then the customer will be able to see the correct price. I have created a clone with the condition disabled:

https://form.jotform.com/73304097386966?WorkshopChoice[special_1009][item_1]=Yr7-9&workshopsession=Yr7-9

Awesome work - thank you