Cart page being cut off

My client’s site has been running on AmyOrganic theme for a couple of years now. Very extensive WooCommerce site. Recently they decided to add subscriptions to products. We installed a subscriptions plugin (tested it with a lot of other themes, and had no issues). However on the site running this particular theme, the cart page gets cut off. Client’s can’t check out, which means my client is losing a lot of sales. I don’t think the issue is with the plugin itself, as mentioned before it works on many other themes. I have reached out to the theme author, but have not heard back.

This error message comes up.

I have reached out on many different forums, but have been unable to get help regarding this issue. Hopefully someone here will be able to point me in the right direction.
Thank you

Normal cart page:

Cut off cart page: