Lightroom Mobile: all edited pictures and presets gone

[Sara5CDC]

I hope someone can help with my problem:
I use the Lightroom mobile app to edit my pictures. suddenly all pictures and my saved presets are gone. the only thing i had done differently yesterday was plugging my iphone into the usb cable of my new car, but that can't be the reason?
How do I get my saved images (with settings) and the presets back? 

[c.pfaffenbichler]

This is the Photoshop (proper, not mobile) Forum. 

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Lightroom for mobile & Apple TV