Problem solved. It was the OpenTasks app.
SOLUTION: In the permissions settings of the OpenTasks app the option “Contacts” (in german “Kontakte”) has to be turned on.
https://github.com/dmfs/opentasks/issues/404
Thanks for your help.
problem symbol €
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Hello, the app server from Memotoo.com an error when I synchronize. It does not synchronize the symbol €, but in its place put the strange symbols. How can I fix it? thank you so much.
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Hello,
DAVdroid fully supports UTF-8. This must be a server problem, please contact your service provider.