DWP

I have a problem. After the call, the phone goes into default
android call log. I want to returning to the DW.

well maybe you selected this as default + remind on it.
easiest way is to set this back is:
unistall DWC, then install it again.
then you should get the choose which you would like.
(optional: do a backup of your DWC settings before, and after install you can easily restore the settings)

PLS use the search function in forum, should also helps to find this - was often described

if it is not working for you, please let me know.

cu camel

EXTRA HINT:
there is an application "ON CALL END", which you can configure what should be happen after a call. maybe you have used this app - or you can try to use that app.