Question How to show logs for webmail.DOMAIN.com subdomain? Log section shows only logs for main domain

[Sebahat.hadzhi]

You can disable the rules globally or for a particular domain/subdomain. You can find detailed instructions here. I am not quite sure I was able to understand what you are implying to be a Plesk bug that needs to be fixed by the developers. Sorry. However, webmail being inaccessible while using the OWASP rule set is not a Plesk bug.