Uci- leave blank as UCI for your dependant will be generated later when he/she is added to file
Payment- pay your entire fee through that link, then a receipt will be generated which you are going to attach with the documents
Even mine expired un july..neither extended nor remedical request till now..called ircc n agent said they are processing application with expired medicals n will ask for once they would need it
Same. Mine was on 26 march. I called ircc n stupid agent said he can’t provide details about eligibility etc, need to apply atip n that is going to delay your application ..makes no sense