I was banned for 48 hours, Because my character used to work at aperture science. I was told that aperture science is fake. That I can't have Aperture science in my background story.

This is my background story(unfinished):
Aperture Science enrichment center, that's where he worked. For 9 years he watched tester, after tester. Watching them do flips, face-plants, and swan-dives. Taking notes for every single little thing that they did. So he tried to quit, but it was harder than he previously thought. Aperture had a contracts. They had him for  at least 10 years. Forced to stay at Aperture he tried to meet other scientists, like one of his co-workers, He didn't really know him that well, So he tried to approach him one day but realized he was already talking to someone (or something) else. He spoke about secret tunnels and ways to travel throughout the facility without being seen. He (my character) called his co-workers “Ratman” because he knew exactly where to go. Even in the test chambers. As the year progressed he (my character) began learning the back entrances to almost the whole facility. On the day of the escape, the scientists where studying computer artificial intelligence.


This is what I think:
Aperture science made the teleportation technology, Black mesa stole something like a prototype they tried to use it(in Half Life 1), And that's how the combine and headhumpers got to earth. Well what I'm really trying to say is: Is my background story able to be used in The HL2RP?
Please Don't copy my background story!