Making a the donation required is a feature that insures that customers interact with the app.
To make the donation required for all customers on your store. This can be accomplished by going to the Settings page of the app.
On the settings page locate the Donations Optional section. If this option is enabled, it will allow your customers to bypass selecting a charity at checkout and will report a donation to your chosen default charity.
When done. Click Save. Choosing a charity will now be required for the customer
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