It's nothing bad to withdraw your profile and create a new one, I did it successfully. Totally I've created 3 profiles yet - 1st was declined after CIC increased the Proof of Funds amount, and in my profile there were literally $100 less. Creating the second one, I forgot my Job seeker Validation code... At least I decided to withdraw it and start cerating profile from the very beginning, from elegibility questionnare - I hoped new code will be send to me. But it didn't happen, so I had the same problem like many people here. Fortunally I found this code written down in my papers and finished 3rd profile. So withdrawing is not a problem, but there's no guarantee you'll get a code. Looks like either it's some programm defect, or a mean to limit applications number...