Hi, I'd like to improve the UX when adding a single set amount donation option to checkout. When I have seen this option on other websites, all one has to do is click the checkbox and the amount is added. However I see that with your plugin the customer has to tick the checkbox and click the Update Donation button, which I find a little counter-intuitive. Is it possible to achieve this currently, or otherwise, could this be a feature request? Thanks so much.