Preorder, Back in stock Duck

I'm a newbie to Shopify and found Peppyduck after looking at what my competitors were using.
It was easy to setup, I managed it myself no problem at all.
Once installed and setup I had pre-orders coming in quickly and without issue.
I'm a small business with little to no budget for app's so I'm on the free version. It works well for what I need.
Shashank and the team reviewed my shop and provided really useful suggestions for improvements, which they undertook at no charge. I really appreciate the proactive support of Peppyduck, hence the 5 star review.