Customers who have purchased System Mechanic as a monthly service from Yahoo, and have questions about their purchase, subscription or renewal (including refunds), should call 800-361-5610 and then select option 3 (for billing).
Address
150 S. Los Robles Avenue
Suite 400
Pasadena, CA 91101
Phone
The Whole Home License® is iolo’s licensing policy that allows you to install and keep your software running on all of your compatible devices within the same home. Previously, users were allowed to install and license their iolo software simultaneously on a maximum of three PCs. Under the Whole Home License, a single activation key allows you to use your iolo software on all of your PCs, other than any PCs you use for business purposes. What you need to know about Whole Home Licensing
To install your iolo product on additional PCs:
You can view the Activation Key on the original computer from within System Mechanic > red menu bar > key icon > Activation Key.