currently the form I am working on sends the user to my paypal account

currently the form I am working on sends the user to my paypal account after signing the form and pressing submit. I don't want that to happen. I want the user to be redirected to a payment page on my website. How can I change this?

I checked your form. You use PayPal Checkout. Actually, the user is redirected to login to his PayPal account. So, they should login and make the payment.

If you want to have different checkout process, you can try PayPal Pro. It allows the user to enter his account information on your website or directly from your form. The form visitor will never have to leave your website.  You can check and follow this guide:

https://www.jotform.com/help/458-How-to-Integrate-Form-with-Paypal-Pro

Let us know if you need any further assistance.