Student or Learner
"I was invited" or "I have been invited" which is correct?
Is there a special alignment of the planets or something at the moment? We seem to getting an unusual number of these simple past v. present perfect questions lately.
I'd suggest for you to read some of the previous threads on this, and then write what you think the difference is. You'll learn more that way.
Hint: The answer is going to be pretty much the same as it was the last few hundred times it has been asked.