I am an undergraduate studying engineering in the USA.
I took classes with a professor, 3 undergraduate, and got A in all of them. I applied for graduate studies last Summer for September admission and used him as a reference for 3 schools and was admitted to one of them. Unfortunately, the one I was admitted to lost the funding for my attendance due to the pandemic and I could not attend.
I would like to apply again this year as the pandemic situation has stabilized. I applied to a program, which I did not complete the application for and they sent reference requests anyways due to computer error and he denied it. I did not get a chance to email him about it beforehand.
Do you have any advice on how to ask, explain, write an email or how to handle this situation? Should I ask another professor? I did not take 3 courses with any other professor however.
I did take 3 courses with him so he is very familiar with my work. But I do not not want to seem unprofessional here.