When I check the woocommerce system status after updating to v2.2.7, I get an information, that the
is old now: v2.1.0 ; valid version now should be v2.2.6
I did this on my test-installation.
Now I just deleted the dokan-version, so the system uses the woocommerce-version. I wndered if this is the right way to go. An other way would be, that dokan delivers an updated version of their form-login.php .