Hi Moshtafizur,
I have tried this and tested on two different browsers and still have the same issue. I also did a reset on each of the apps setting pages. Still no message being displayed to the user.
To confirm, the registration is a WooCommerce customer registration. The registration panel is on the same page as the Login panel and is shown on the My Account page.
So, to be clear where is the message ““Thank you for your registration. Your account has to be activated before you can login. Please check your email.” supposed to show on the screen?
As indicated earlier, I have tried various settings. Perhaps I am missing something.
Peter