Hello there,
Please rollback to the Helix Ultimate 1.1.4 version as I can see you are using version 2.0.1, see the screenshot here. Please do not upgrade to the latest Helix Ultimate 2.x.x versions if you have an existing site with other templates than Helix Ultimate as the templates are not compatible yet.
If you don't have the older version, please download it from the link given in the Hidden Content area, it will solve the issue.
Another thing, you can take an akeeba backup of your full site and can share the zip file with us in the Hidden Content area so that we can check from our local environment. As you don't have akeeba backup installed on your administrator, you can follow the blog post here. It will help you to understand how to take a backup.
Thanks!