So a prof who I did a bit of research with in second year and have taken numerous classes with went back to UToronto (i.e. left my university) this year, but agreed to write me a reference letter still for my universities. I put his name down for all the online applications and such, but for whatever reason he hasnt submitted anything yet, and has been unreachable by phone or email. I do already have 3 reference letters, he would be a fourth, but an important fourth since I did research with him and did well in a lot of his classes....
What can I do besides keep trying? I don't think there's a way to remove him as a reference if I've already submitted the application - I can simply view whether or not he's submitted the letter. It's not dire straights yet but getting there. Will admission committees blame me if it shows that I have 3 or 4 references submitted, or as long as I have the minimum requirements they wouldnt penalize me?