Can't login raspberry pi (login as pi)

Hi,
Can anybody help me, i’am stuck.
flashed the last home assistant on my raspberry pi.
I can login as root, no problems here. (via putty and WinSCP)
But if I try to login as pi, password: raspberry is refused. (both Putty and WinSCP)
I flashed the sd card again and started all over again, no joy.

Please can anybody help me?
Thanks in advance.

Connecting via ethernet cable on a windows 10 computer
(also raspberry is not visible in my network folder)

If you installed hassio there is no ‘pi’ user. At all. There really isn’t even an underlying OS to mess with.

Hassio is running under docker, and the host OS is running Resin-OS. You can’t change anything in the host OS