Child support jurisdiction

I have a current child support order issued in the state of Utah wherein my ex has been ordered to pay child support and I have been ordered to pay transportation cost in lieu of child support. While in my ex’s custody, in the state of Ohio, my 17-year-old son became incarcerated for one year. Via first class mail I received a Judgment Entry from an Ohio court assigning me on half of the cost for my son’s detention “as and for child support.” Utah has maintained continuing, exclusive jurisdiction in this case due to the nature of the case.

I am a welfare assistant for a church. The church covers all of my living expenses and I earn $50.00 per month. Unable to afford counsel, I entered a pro se motion to set aside the judgment and modify the child support with an accompanying affidavit disclosing the breakdown of my income and assets. As a result of my pro se motion a hearing has been set. I contacted the local legal aid for assistance and was told that because I entered pro se they would not be able to assist me. I contacted the court clerk and was told that I would not be permitted to appear via phone. What recourse do I have at this point?