Flatpack Requst for Xojo on Linux

Project information: Xojo IDE

Xojo is a software development environment and is Basic like for multiplattform development of applications. Using xojo inside linux it’s free. Id you try to debvelop for mac, or windows, you need a license which must become paid.
Name: Xojo
Homepage: xojo.com
License: Free(Linux and Rasbery Pi only)
Upstream has been contacted:

That would be important to know, considering that for an IDE this submission requirement is likely to apply:

What does it mean; Upstream has been contacted? Can you please translate the meaning in some other words for a Newbie in this Community

The question here is if you have contacted the original developers of the software about this.

Generally, but epecially in this case it is important to know if the developers know this request, and if they would be willing to support the distribution of the software over Flathub.