menues of the kathmandu pro theme

Hi there, I have a questition regarding the menues of the kathmandu pro theme: I have a multisite and two sites with two languages: DE and JP. On every site is a primary and a secondary menue. The function of the primary is switching between the DE and JP, the secondary is the normal navigation menue on the site. Now the problem is on the mobile screen: When you click in the secondray menue on a site (not home), in the primary menue the name change from DE or JP to Menue (german: MENÜ). This is disorientating. I need to see there only DE or JP and nothing else. Do you have a idea what thing is wrong? Thanks a lot! Kind regards, chris.