Before few hours a new Version from CMS Joomla! was released. According to the Release News on joomla.org more than 350 optimizations could be solved with this release.

So far JoomISP seems working with this Joomla! Please give a feedback to if you see errors!
The Demo Version is already running on current Joomla! 3.6.3.

Plesk Plugin v1.6.2 Update

Depending on your security level in Plesk, a 16 signs password including letters, numbers and special signs can be required for a propper functionality.

Current version already includes special signs. The next days a further update with a selectable security level in the Plugin and automatic generation of correct passwords will come.