But.. My university's internation student advisor says this will not work as HO need offial letter from university.. the Professor letter will not be accepted...

Hello. I am university student here. I wanted to Apply for PSW. As I had to Resit my project due to which my Visa are expiring before the results are announced . however my professor is ready to write me a letter confirming that I have passed my project and degree will be issued. will this be enough...