I did it. No refund required. Thank you for your help!
Thank you Alice Epubor <epubor.alice@gmail.com>
Hi,
I ordered DRM Removal a few days ago for Mac but unfortunately it's not working as I wanted.
I de-registered in the software already.
Could you help me to get the refund?
Thanks for your help!

I want Refund
I have completed these two steps
1, Run Epubor software, click "Settings" --> "Tools" --> "License Manager" --> "De-Register";
2, Request refund from our platform 2checkout;
My order is #164069322 on 2checkout.