If after installing and verifying Magic Page Plugin you will be taken to the Databases page. The first page you will see will be all of the Australian Databases.
If you look in the top right hand corner where you see Australia you should see a little drop down arrow.
If you click on that then you should see all of the country databases.
If you do not se the arrow then make sure that you are not zoomed in, that your server is running PHP 7.4 as a minimum, preferably higher, that your Wordpress is up to date and all of your plugins and themes are up to date.
If all of the above is correct and you still can not see the drop down arrow then you need to check for any plugin/theme conflicts as some paid themes will disable the drop down.