I have the same problem i had with the other site arion.gr when i go to the https://www.arion-software.co.uk/index.php/download-commerce. There was a problem with the t3 version and you made some changes to it and it worked. Can you check?
check the https://www.joomlart.com/forums/topic/problem-with-my-site/ discussion
john-patrikiadis
Hello
I will try to apply same changes done for the other website but i will need you to post a temp super user account for your backend editing your first post and also an ftp account for your server where template is installed.
Where should I write the credentials? This is new forum and I don;t know how to do it
You should edit your first post and add there missing info
I have done this. Can you please check?
I applied changes to the file /plugins/system/t3/base-bs3/html/layouts/joomla/edit/params.php
Could you please check and confirm ?