Thank you so muchX means temporary file number.
Pay the difference amount and generate a web form.
Also try calling IRCC if u r lucky to reach them.
to Link to GC key use different option like application number- try with XF and F both.
In number of applicants (Last Option) enter 2 instead 1.
I will give it a try
Also should i raise a web form or should i upload the document here
I just googled webform and this page came up
https://secure.cic.gc.ca/ClientContact/en/Application/Form/72
Thanks