Latest WC update broken your plugin functionality
As all the other comments have said, you need to release an update for your plugin ASAP! A lot of information is no longer available in the emails (either to admin or customer), including email addresses, order notes, payment fees etc.
Please do the decent thing and get a fix on ASAP for this.
Zack
Hi
We’re on this and other bugs that came with the latest WooCommerce update, and will post an update very soon.
Thanks