You can now activate a Checkout Rule for your shop that'll prevent users in your shop from only having donations in the cart/checkout!
1. Go to Settings
2. Go to Checkout
3. Scroll to the bottom, and click Add Rule
4. Click the Give & Grow Donations checkout rule
5. Click Save
6. Click Turn on!
Testing
1. Go to your shop
2. Add a non-donation product, then a customer donation
3. Try removing the non-donation product to leave the customer donation as the only item in the cart/checkout
