Afaik, the -200 and -300 have the same cockpit.
You just opened a pull request instead of an issue... which probably caused confusion... and it thus was right to close it...
Next time open an issue and you're right if he'd cloese it.
And please don't mind what JMav or Marsdolphin says... they are very much inactive on the A330...
So if you really want to work on it, just fork the repo.
Then do a pull request and I'll merge it, if it's fine.