DWP

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

Hello
This should be in before you set "default android call log" to default.
Application Manager, find the android's default contact software.And then clear the default selection.

if you don't find the option to set it back, you can also uninstall DWC, then install DWC again. After that it should work again or you will be asked what should be happen after call.
(optional: make a backup/restore of DWC settings before)