Legal documentation proving guardianship is missing

[FedrGrozniy]

Hello people,
Need an advice here. Applied for my son's citizenship last week and it was returned to me as an Incomplete Application for the following reason:

THE PHOTOCOPY OF LEGAL DOCUMENTATION PROVING LEGAL GUARDIANSHIP IS MISSING. SEE SECTION "STEP 1 - GATHER DOCUMENTS" IN THE INSTRUCTION GUIDE.

Not quite sure what they mean since I had attached a translated and notarized copy of the birth certificate to prove that I am a parent, and NOT a guardian. My wife has kept her last name, but my son has mine. I called in to clarify what they meant and IO just told to write them a letter, but I don't feel like taking chances.
Any tips, suggestions or advices would be greatly appreciated....

 

[ifeedly]

Attach the following:
Your marriage certificate
Birth Certificate
all pages of passport: Yours, your wife's and your Kid's.
Record from school: letter confirming enrollment; progress reports
Provincial health card
Permanent residence card
and a letter explaining that you are parents

Follow this rule:
When questioned about anything send proof by busload and if bus is not available then send by a full shipping container. ;D

Have you checked the application again (Item 4 : Person applying is a parent or Guardian: must have checked Parent)