Mosow,
Let me try to put your mind at ease. It is ecas format to write the address the way it shows on your ecas. It is correct mine shows that way and my attorney said its customary. Second, CIO does not send a letter (although ecas says they do) only an email. Hope this helps you to relax a bit ;D. You probably have a long way to go (unfortunately but Buffalo seems to be one of the slowest offices). Wait for them to send medical request before you worry about if they were sent or not. As you can see from the international spreadsheet it takes around 6 months after you applied to get ecas yo go in progress after you get your PER. It will take about 7-8 from your PER to get your medicals (at least that is what it seems for now - their are so few applicants that this is not statistically significant). Don't worry things will come with time and there is really not much to do but being patient.
Rod.