I had a lot of issues with the application myself, fortunately I was able to 'submit' the application by the priority deadline (May 10) but the application itself was not yet "complete". After months of trying to get in contact with CSAC they finally picked up my call two weeks ago and was able to solve my issue. I asked the lady if; because I was just now finally completing my application would my school, just now be getting my information and she said that no, that my school has had all my information since I first submitted the application but they were just withholding my information because my application was not complete.

Basically, if you applied already your school should have all your info even if you were un able to submit your 'signature' when you completed the application. As far as I understand it shouldn't affect you. Good luck!