Donate Button fails

Hi,

Here is my site http://taafng.org/.

Steps
1. enter an amount and click donation
2. plugin takes you to the checkout page
3. Lets say internet connection breaks or you can just click any other link
4. if you go back to the home page and Click on the donation button, it never calls the checkout page. It just refreshed the same page

Regards
Tomi

https://ww.wp.xz.cn/plugins/woocommerce-quick-donation/