Hi Gene. I have already said my final word twice in this topic :). Other members of the JoomShaper team have many times agreed with my opinion on this issue. On the forum there are many topics reported about problems when both templates are installed on the site.
And one more point - the members of the support team are sometimes mistaken, since they are not practicing webmasters.
I have been using Helix 3 and Helix Ultimate for 7 years in practice. Therefore, I know things that even developers may not know :D
Nevertheless, I admit that in the latest updates of templates these conflicts could be eliminated. But this was not mentioned in changelogs. Therefore, to check, in any case, you should to use the development site.