THAPAR, Circuit Judge. Thomas Fox and others like him failed to pay some of their property taxes. So the counties they owed foreclosed on their property and sold it. But the counties did not just keep the money owed; they kept all of the sale proceeds—sometimes tens of thousands of dollars beyond the taxes due. None of it went back to the property owners. Seeking to receive the rest of their money back, Fox filed this class action against the counties.

After learning about the property owners’ plight, Asset Recovery Inc. contacted potential plaintiffs about pursuing relief on their behalf. Fox believed that ARI was improperly soliciting class members, so he asked the district court to order ARI to (1) stop contacting class members and (2) allow class members to back out of their agreements with ARI. The district court granted Fox’s motion. ARI appeals that order. We affirm in part, vacate in part, and remand