Hey! I will try to answer your questions to the best of my knowledge but others can please interject if I am not correct.
1. In regards to CRPO accreditation, just because a program is not accredited doesn't mean that they cannot license. When you go to get licensed by the CRPO you submit an application. If you went to an accredited program then you apply through the "recognized program" stream of the application, if it is not accredited then you apply through the non-recognized stream and its basically a longer application process and less guaranteed for licensure. Now for Mac specifically, I could be wrong but I heard that it's a fairly new program and in the process of being accredited. One thing you can do is a deep dive into the requirements for the CRPO and compare it with the curriculum of Mac's program and see if it lines up. You can also try your luck calling them and asking about anything you're unsure of (although they do say that they cannot give you a definitive answer on whether or not the program meets the requirements so keep that in mind).
2. You seem to be very set on UofT's program and very enthusiastic about it. So, I would say if you REALLY want it, keep trying! However, I also encourage you to reflect on your long-term goals. At the end of the day when you are practicing in the field, does it matter to you where you graduated from? Is there something in particular about the education at UofT that you feel you cannot get anywhere else, or is it a matter of prestige? Speaking for myself, I really struggled with this same question because I feel that I've worked hard all my life and I want to go to a program that's considered competitive as recognition for my efforts.. but also at the end of the day when I'm licensed I will be working alongside lots of people who got to this point through other maybe less competitive routes and are doing the very thing I want to do alongside me. So, try to think about those things a little more to help you with your decision. This ties in to #3
3. Regarding Yorkville, the deadline to apply for the September cohort has passed BUT they do have a January cohort, so if you decide to go with this route, look into the deadline for that. From what I understand Yorkville is accredited by the CRPO and prepares you for licensure as a psychotherapist; however, Adler goes one step further and I believe sets you up also to be able to register as a psychological associate with the CPO. What someone explained to me is that its more or less a private school version of a clinical psychology program but because they do not have a PhD available at Adler Toronto, it follows the requirements of the CRPO for licensure.
I hope these answer your questions to some capacity. I am currently also waiting on OISE to respond, so I totally understand your frustration. Best of luck!