Webalizer and Awstats are enabled by default on our Wordpress plans, and Awstats is enabled on our Plesk Mega, Giga, and Tera plans.
See here for how to access them.
Webalizer and Awstats stats are available on our older Minimus, Medius, and Maximus hosting packages
You can enable these when setting domains up on the hosting package or turn it on later under:
Home > Hosted Domains > domainname > Webalizer
More Services > Awstats > Install