If you plan to change your DLI prior to starting your studies, you need to reapply for another study permit. LOADS of discussions around this if you search the forum. I was also in the same situation and my local IRCC office emailed telling all I had to do was transfer my DLI on my account, but because I know the rules had changed I contacted IRCC directly and also sent my local IRCC the new link form their website, only then did they apologise for confusing me and said I actually needed to get a new SP. Luckily, I had enough time to re-apply before my intake.
Since you have transferred on your account, you might have compromised your SP. There was someone here who did the same thing and few weeks letter got an email from IRCC saying their SP has been cancelled because they transferred outside Canada and they should not attempt to travel until further contact from IRCC. Last we heard from that person, 90 something days has passed with no further contact from IRCC.
If I were you, I would change my DLI back on my account, to be able to travel to Canada at least.
