Cannot access email log as admin

Don’t know since when or if this is related to updates at all, but on my website I cannot access logged messages. In sidebar menu, there is no Email Logs item anymore and on Dashboard widget, the link redirects only to Dashboard. I am the only administrator of the website so I don’t know what capability should I have to open the log. Entering the link “wp-admin/admin.php?page=postman_email_log” directly returns “Unauthorized access”