non-custodial parent may come into compliance by paying off the arrearage, or by obtaining an order establishing periodic payment on the arrears for which no payment has been ordered thereon, or by obtaining an order modifying an existing order for payments on an arrearage to encompass arrears for which no payment has been heretofore ordered thereon; provided, if the non-custodial parent has been served with more than two (2) notices of proposed action in the past five (5) years, compliance may be obtained only by payment of all overdue and unpaid payments that have accrued since the effective date of this Act. If the non-custodial parent’s non-compliance is failure to make court ordered payments on an arrearage, the non-custodial parent may come into compliance by obtaining an order modifying the existing order for payments on the arrearage; provided, if the non-custodial parent has been served with more than two (2) notices of proposed action in the past five (5) years, compliance may be obtained only by payment of all overdue and unpaid payments that have accrued since the effective date of this Act.