GST late filed returns

I can’t remember nor find any reference for my question. Please help.

Client filing tax returns for the last 10 years. Can he expect to still receive GST for all those years( yes, he qualifies) and the Climate/Carbon rebates(we are in NB)?

Is there a statute of limitations on receiving these funds like their is with CPP/EI overpayment?

Thanks all

I believe you only have 4 years to claim ITC’s.

Sorry.. I was not clear, I did not mean ITC Gst.

I mean the Quarterly GST cheques for modest income families.