German company Studio Babelsberg AG, which co-produced the film with United Artists, reportedly made an offer to the extras, who were thrown from a moving vehicle while filming a scene for the Bryan Singer-directed war thriller.
The actors, who demanded $11 million (£6 million) in compensation for their injuries, have allegedly failed to respond to the proposed deal.
Studio Babelsberg's president Charles Woebcken said: "We have offered a settlement. But they haven't even reacted."
He also hit out at the extras for making unreasonable demands and courting publicity, saying: "In America, these things happen. You have a different system in Germany.
"If you lose an arm, it's not worth a million dollars. This [is] a broken rib."