I will start :
1- Sent a web form to IRCC explaining the reason for travel, estimated date of travel and supporting documents.
2- in two business days I got an email from IRCC advising that they have forwarded the request to the responsible office and that I should get an invitation to submit my application via
Canada Post's epost Connect™ in 5 business days.
3 - I received the epost message; and they asked to upload all my documents via the website (you can upload up to 1GB). Here is a copy of the requested documents
I got my guarantor to sign the application, photo and then took photos of everything by my phone since I don't have scanner and uploaded everything by replying to the same message.
I paid the fees online ($120), and I don't have a valid RTD so I didn't mail anything.
4 - I'm not sure if they will contact me if they approved my file/uploads or if they start processing my application. I will update this thread of any changes, fingers crossed!