hi Cian,
Did you try calling them ? Explain them that you have been waiting 11 months without much progress.
Put NS office also in loop: May be you can inform your NS nomination officer about the current situation and ask them for help. They should know that a candidate which passed their screening and got nomianted got stuck with the PR process. Request them to help you from their side.
One dumb question: During the PR application, did you submit all the visa pages in your passport ? Is this correctly matching with the travel history?
Regards,
dpnc.