http://www.entemp.ie/trade/marketaccess ... solvit.htm
If the applicant was legally resident in the State at the time of the application and had one of the following Stamps in their passport:....
the applicant can return to the local Immigration Registration Office to enquire about a renewal, or regularization, of permission to remain in the State. However, the applicant should only do so where the refusal letter instructs him or her what to do next. Where the applicant has previously received a refusal letter, which does not contain an instruction as to what to do next, he or she should now write to EU Treaty Rights Section, Irish Naturalisation and Immigration Service, Department of Justice, Equality and Law Reform, 13/14 Burgh Quay, Dublin 2 seeking a review of their case.