Hello Alessandro Fasolo,
Thank you for reaching out to our technical support forum. I’m sorry to hear about the trouble you’re experiencing.
We will not be releasing any further updates or security backports for Joomla 3 compatible versions of Helix Ultimate.
Joomla 3 reached its official End of Life (EOL) on August 17, 2023. Since it is no longer supported by the Joomla Project, we have also ended support for Joomla 3-based versions of Helix Ultimate.
To continue receiving security updates and new features, we strongly recommend upgrading your website to Joomla 5 and then updating to the latest version of Helix Ultimate.
We understand that migrating legacy websites requires planning, but remaining on Joomla 3 means you will no longer receive security fixes from either the Joomla Project or Helix Ultimate.
Best regards