I don't know how flexible IRCC is likely to be about proof of English language proficiency. It may end up depending on the specific civil servant who reviews your submission, and they may be easy-going or they may do everything strictly according to the book and return your application.Thanks emamabd ! Yes you are right its the same test so not acceptable. Unfortunately I don't have any record of my IELTS result and I guess there is no way of getting a duplicate of it. How about if I try sending my degree with the CCPE verification letter that approved my education for immigration purposes. If not acceptable to CIC, I think my application will not be returned on this basis. Max they can ask is to submit a valid proof, that I will keep ready by then. I just want to submit my application and don't want to delay just for this reason. Do you guys agree with this approach! Getting a letter from uni gonna take some good time for me.
If they don't accept your diploma without the explanatory letter you'd be facing a few weeks to a few months of delay: the time for your application to have its initial review, then the time for it to be returned, then for you to gather the documents they ask for, and then resubmit your documents, and again wait for an initial review.
One other thing to consider: if you request letters from your university and your spouse's university will they be in English? Are your diploma's in English? If they are not then you'll need to provide an official translation, which will take some time and cost money. Would it be cheaper and faster to write the IELTS/CELPIP? Or, if the documents are in English or if translation is cheap enough, is some delay worth it?
It's your choice.