There are some installation problems

Hello!
I have Joomla 3.9.16 (PHP 7.4.28) and Moodle Version 4.0.4, plus Joomdle 2.1.0.
I successfully connected both sites. Checking the connection "System Check" shows everything is OK (image System check).
The Joomla site shows moodle courses, also I can manually add a user to the moodle via the "Add users to Moodle" button (image User add Moodle).
However, when a new user register in the site joomla and created in Joomla, it is NOT automatically added to the moodle.
Also, the "Automatically create Moodle users" and "Automatically delete Moodle users" buttons are gone (image Button).
What can be done in my case?
Thank!

Hi.

You are running an outdated Joomla version. Upgrade to latest 3.x to get the buttons back, and probably fix the auto creation issue.

Surprisingly, it helped. Buttons are back and users are automatically added to the moodle. Thank you very much for the simple advice.)