Hi there,
Thanks for reaching out.
Could you please provide temporary Joomla administrator access so we can check the issue from the backend?
Also, please let us know the exact version of Helix Ultimate you're using.
Regarding the warning below:
Warning JInstaller: :Install: File does not exist [ROOT][TMP]/template_copy_6a71da3b355e7/en-GB.tpl_shaper_helixultimate_test2.ini
This warning indicates that the language file for the copied template could not be found during the copy process. While it may not always be the direct cause of the issue, we'd like to inspect your template copy and verify why the main menu is not being displayed.
Best regards,