Sidenav does not require a monthly subscription. We do however require you to create an account on our Thinkific site and purchase Sidenav before you can install it into any site. Plus, you will also be able to quickly access any other PowerUp that you have purchased.
After entering your subdomain, you will see a screen that looks like below. Be sure to click on the ACCEPT & INSTALL button.
It's that big dark blue-ish / purple-ish button at the bottom of the page