No, they haven't contacted me at all about the review or anything yet.
Unfortunately, no relevant information is found.
They said the original claim was rejected because there wasn't enough proof. I gathered more evidence 2 years ago but just filed the decision review last week. Is there a time limit on when I can get new evidence?
Yes, you only have a year from the original claim to have it reviewed in most cases, unless you have a Fiduciary or Multiple party claim.