WooCommerce payment button missing

Hi,

I installed and configured Grace: Instagram Feed Gallery on https://www.campbellsofbeauly.com (which uses WooCommerce) and everything looked fine. However, I was contacted by the site owner and advised that shoppers were complaining because they couldn’t submit their orders.

I discovered that the “Continue to payment” button at the bottom of the checkout page was missing – it was impossible for anyone to submit an order. If you want to see the button on the page you’ll need to add items to your basket then go to the checkout.

I went through all the plugins turning them off one by one and I discovered that when Grace: Instagram Feed Gallery was turned on the payment button vanished from the foot of the checkout page, and when Grace: Instagram Feed Gallery was turned off the button appeared and the checkout process worked.

I hope you appreciate that I can’t leave Grace: Instagram Feed Gallery turned on so you can investigate this as my client would be losing sales. I would however like to use Grace: Instagram Feed Gallery on this site (and other WooCommerce sites), so I would be grateful if you can advise why Grace: Instagram Feed Gallery would cause the WooCommerce payment button (and terms & conditions) to disappear from the checkout page.

Many thanks.

The page I need help with: [log in to see the link]