Hello friends! I made a simple plugin that adds a warning message under the date of birth section on the sign-up page. As you know, the date of birth cannot be changed later on XenForo, so members need to be careful.

• It shows a nice warning box just below the date of birth field
• "Attention! Make sure you enter your date of birth correctly. It cannot be changed later!"
• It uses XenForo's own design, it never spoils it
• It looks good on both desktop and phone

If you want to change the message, you can easily do it from the phrases section of the admin panel. You can type the warning text you want.