DKIM problem, can't enable verification

DKIM problem, can't enable verification

Hey guys :)
I just noticed alert on my account that DKIM need some attention. I think I did everything as explained here:

but I still get notification that DKIM is not enabled or authorized. Also mailradar.com says that "Domain-Key Status: NOT PASSED".

Could someone from zoho staff guide me with this one? I've read many similar topics but can't get working solution for me.

Best regards,
Kacper :)