Unable to see the option to collect custom amount payments when using Stripe's integration

In previous forms we could use the option to 'Get Amount From' for stripe payments to get the total amount from a jot form field. Now I am creating a new form and that option is gone. 

You should be able to see that option after you've entered your Stripe credentials.

Let us know if you're still unable to see it when you have entered your credentials.
Thank you.

We are still unable to see it. I have attached screenshots below. 

My apologies, I should have mentioned before that you also need to add a calculation widget to your form to be able to see that option.

Please add one to your form and let us know if the issue persists.
Thank you.