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stilcor
It depends on what you mean by Builds as it can refer to both the accepted and unacceptable.
1. If you download a build off the internet which almost always installs add-ons as well, then yes it is banned from this forum as it enables easy access to Pirated and Copyright Infringing movies and tv shows. We didn't develop them, so it is not up to us to help you with them.
They, and your installation of Kodi is then banned from receiving assistance at this forum until you clean it and submit a Debug Log showing it has been cleaned.
2. If you downloaded a skin from this forum and then made some changes to a skin, such as changing colour, fonts, images, etc then you should refer to it as a skin Mod (modified).
3. If you are talking about builds such as, say, LibreElec, OpenElec, MrMC etc, then don't refer to them as builds, but use their correct names. Technically they are forks of Kodi but can also be builds of Kodi.
Hope that clears it up. Don't fall into group 1 because there is some nasty malware hidden in some of those builds.
But sounds like you have fallen into group 1, so no support.