For the past five months, a group of litigants has been trying to hold Andrew Anglin, the founder of the neo-Nazi website The Daily Stormer, to account for some of his actions. It has not been easy.

A team of four people hired by the nonprofit Southern Poverty Law Center to serve Mr. Anglin with notice of a lawsuit accusing him of leading a “troll army” have failed. They scoured parts of Ohio, where Mr. Anglin is from, and talked to his brother; they went to his father’s counseling office; they drove around his sister’s church. When they saw someone was home at an apartment affiliated with him, they staked it out.

“He knows people are trying to serve him,” said Teresa Ploesser, who works for Encore Process Service, which the Southern Poverty Law Center hired to find Mr. Anglin. “He knows what he’s doing. To avoid service, you’ve got to be a step ahead.”

Mr. Anglin, 32, who created The Daily Stormer in 2013, has been a key figure in stoking the resurgent white nationalist movement. His website, billed as “The World’s Most Genocidal Republican Website,” is a major platform for neo-Nazi news and commentary. He has used the site to champion a modern holocaust that would create an American white ethno-state and to target individuals whom he sees as enemies. During the white supremacist protests in Charlottesville, Va., this month, Mr. Anglin live-blogged the proceedings.