It's not an 'official' build of OpenELEC. Officially OpenELEC only support one Android brand, Wetek, from which they profit financially.
In most cases this won't be a problem though, you can still access Kodi repo and other repos.
The problem here appears to be that MediaPortal is only available in OpenELEC repo. I have reported this to Venz and am waiting for a reply from them. Alternatively, I am looking for a way to install mediaportal outside of openelec repo.
I've replied to your email. If you want to return then no problem.