ISSUE SUMMARY:
When I register on my website, I get this message at the end of the registration process:

Your account has been created. An activation link has been sent to your e-mail. You must activate the account by clicking on the activation link before you can login.


And I receive this email (without any activation link..) right after:

Hello xxxxxx,

Thank you for registering at mywebsite. Your account details are as follows:

Username: xxxxxxx
Password: yyyyyyyy

Once you have completed the rest of registration process, you will receive another confirmation email.



STEPS TO REPLICATE:
1. Register on my website
2. Check your mailbox
3
4
5
RESULT Wrong email sent to users and no activation link.
EXPECTED RESULT Right email sent to users with right activation link
BROWSER FF

Hi, Luis.

This is correct email. After registration you should receive TWO emails:
- with account details
- with activation link

You received only one... second one is probably in your spam box. Please, check it.

Hello Michal,
I created another user and I checked also spam folders. I only receive 1 email, the one with activation link is missing...

Louis

Hi, Luis.

I just registered on your site:

i.prntscr.com/9895814d37034d788cb5c13127b55142.png
i.imgur.com/Mo73W2E.png

Then I activated my account - you may check that. It works fine.
I received both emails as you can see.