Make sure you have a current, valid email address set in your profile and set a password so you can login without it. If you get locked out after that time, you can choose "Forgot Password" to fix it as long as a valid email is on your account.
I have set up a forum on my server: https://ddx.guru/
When I test it and when I edit the comment, after saving it, it appears as a new comment (not the same with edited content).
Want to test if it is expected behavior or problem with my system.