This article in the Stanly (North Carolina) News & Press has some details about the legal status of the Green Party in North Carolina, toward the end of the article.

The law, effective January 1, 2018, says any party that placed its presidential nominee on the ballot in the last presidential election in at least 35 states is a qualified party. The Green Party qualifies, and the party has already submitted proof. But because the State Board of Elections currently has no board members, the staff of the Board of Elections feels it cannot implement the party’s new status.