Any suggestions on how to fix iBUS app that will not retain the coding I input? I’ve coded for signal blinking and cornering lights. It works temporarily but 24 hours or so later everything is back to original settings. For instance, drove the X5 yesterday and blinkers worked as coded. This included several trips over the day so the ignition was on/off several times. This morning I drove to work and blinkers back to factory settings. I changed nothing overnight.

Ideas?

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2005 X5 3.0i
2003 530i Sport (former)
2014 Audi A6 TDI Prestige (daily)
2018 MB C300 Cabriolet (wife's)