Error: Avast mobile security has been endet V 6.6.0

hi, after the update to the latest version, my avast mobile security is continously endet and does not work anymore.
Device: Medion Tablet with Android 6.0.1. I already deinstalled it and installed it again from Google Play, but same result. Older versions did work on the same device with out problems. 'I habe submitted the error reports already.
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Hi, unfortunately we were not able to find anything in our crashlog. Could you please go to the Avast Mobile Security app > Help & Support > Contact support and contacted us directly from the app - that should help us find out more. Thanks!