Hi Sky_01, your case is a bit different since a family members/dependants are generally included in a single application, hence the application has 1 file no. and the primary applicant has 1 UCI. However, let me try to analyse the situation:
1. I believe 4 separate Info update forms should be filled, one for each UCI, considering that each form has one 1 space for a UCI.
2. RPRF payment is based on no. of applications, which is CAD 980 per application. If you've submitted a single application, the fees is ok, because you would have logged in to ECAS through your own UCI. So, the fees is for your own UCI and all the dependants included under its corresponding file no./application.
I may not be 100% accurate and it is best to seek professional opinion (like an agent) or from someone in a similar situation, search this forum completely n try to seek out relevant info. I would suggest the CSE route only if all other options are exhausted and you are unable to resolve this situation within the next couple of days.
I have received a single mail addressed to me requesting
Medical
Rprf (which i paid not through ECAS but by clicking on the hyperlink provided in the mail were i registered with my name and email, selected the number of applicants (two) and paid the fees)
police report
information update form
biopage of passport
Then next day i received 4 mails with a medical related form for each, with different App. No & UCI number for each of the member.