Gave up now.
This could be a great extension when being flawless.
I will write a better review if all the bugs have been fixed.
Thank you for your valuable review.
Yes, the first version had several issues including email notification, but all of them has been fix in multiple updates after that. The truth is there are no products without issues, but we believe with 2-weeks release cycle, all issues will be addressed and fix timely.
So please, if you have a change, give the product a second try anytime soon.
Thank you again.