The synagogue in Hagen was under police protection on Wednesday, and Yom Kippur services were canceled the following day.
It’s part of the new European Center for Jewish Learning at the University of Potsdam, which also houses two rabbinical seminaries.
Nine investigations are ongoing and there are six more preliminary probes.
The restoration was “lovingly done” but did not bring the synagogue fully back, a Goerlitz Jewish leader said.
The incidents are among the first manifestations of antisemitism in Europe connected to recent escalations in the Israeli-Palestinian conflict.
Felix Klein urged authorities across Germany to bar protesters from using the symbol, saying it relativizes the Holocaust.
The number of antisemitic crimes reported to police across the country rose to 2,351 from 2,032.
The city of Dusseldorf has agreed to return an Expressionist painting estimated to be worth $18 million.
Germany used its influence on the E.U. to bend the rule that a European-produced vaccination would be given first to European countries.
The German leader spoke at a celebration marking the 70th anniversary of the country’s Jewish umbrella organization.