Muller martini bravo memory issue

Hey all my muller martini bravo was having an unusual error with one of the feeder kept showing a machine fault on a feeder I wasn't using and it wouldn't let me do anything. I turned it off and back on and it had a boot up error i checked connections on the back and there was a small battery that had become disconnected plugged it back in and tried booting it up again and it worked but was in german switched it back to english and now it has forgotten all of its feeder data. how can I input feeders I really need this machine up and running for a job we got it used and this is the first job we are running it on i did some testing on it before hand no issues and now this as soon as I am setting up for an actual job. please tell me this isn't a catastrophic problem