Particle Illusion Standalone: Support is only available through the Particle Illusion Forum, which can be found here. There is no email or phone support for the standalone version.
The plugin version of Particle Illusion included in the full suite of Continuum comes with one year of free upgrades plus email and phone support. The Continuum Particles Units and the Particle Illusion Premium Filter both have access to email support only. The Particle Illusion Forum is also available for support for all versions of Particle Illusion..