Security plugin for admins
By following the yoursite.com/administrator link, you can start logging into the admin section. And if you accidentally reveal your account information, an intruder can do anything on your site. This plugin was created to increase the security of the admin section. Even if an intruder knows the login information, they still have to go through one more step to gain access to the admin section of the website.
Why you should use it:
- Requires OTP to log in: An OTP code will be sent to the administrator's email address, suspicious logins will be asked to enter it.

- Block suspicious logins: If this login comes from a suspicious IP address, an email will be sent to the administrator. At this point, the admin can confirm it's them or not. When the person who is logging in is not an administrator, this IP will be locked and the login session will then be automatically deleted.

* This extension works for Joomla 3,4 and 5.
After successful installation, go to Admin page > Plugin Manager > User - Admin Login Warning to set it up and enable it.
The parameters include:
- Email Address: Security codes and login alerts will be sent to this email address.
- Email Key: This key is used to perform tasks via email without having to log in.
- IP Whitelisting: All security features are disabled when IPs are on this list.
- Security code: Requires a security code (sent to the above email address) when the visitor's IP is not whitelisted.
- IP Blacklist: When a user has an IP address in this list, they cannot log in to the admin section.

I have been googling how to change the menu colours, as the black text on my purple background is not very readable. However everything I have tried to change the text colour of the Off-Canvas main menu text to white did not work.
Would you know what custom CSS I would need to change all menu items to white text (including submenus).
Probably need background colour to not be white when hovering over submenus
Any help you can provide would be gratefully appreciated (or a pointer to some useful help).
Thank you
see
https://siteupdate.vedicmaths.org/index.php
InPre-Update Check for Joomla 5.4.4
for Off-Canvas it says
Joomla cannot detect the extension's compatibility with the target version of Joomla.
have you implemented the compatibility stuff for Joomla to upgrade extensions correctly ?
Have got two off canvas menus working (1. for tools and 2. for main menu)
However I can only get the Main menu to display the first level of menu items.
Have you any suggestions for getting the sub menu items to display ?
N.B. the menu item with sub menu items does display a down arrow, but trying to click on it only display the item at the main menu level.
see
https://siteupdate.vedicmaths.org/index.php
If you want to see where I have currently got to