As much as I don't like calling CIC, I did so early morning today and had a pleasant conversation with the agent, much to my surprise.
1. Can you find my file in the system to give me a temporary number? He checked couldn't find it.
2. Can you see other September applications in the system? They're not in the system yet,I do see July though, so maybe give it another month before calling back, close to December most likely.
3. Can I submit a webform without the temp number? Yes, you can, but it's useless because it won't link to any application so would advise you wait for at least the temporary number.
4. Does name have to be written in native language on IMM5406? Yes, that would be preferred if applicable.
Hopefully these responses help the rest of you.