You don’t have to purchase it Toolbox Premium again! If any of the apps ask you to purchase it again, please make sure that you have redeemed your license key first, then please also make sure that you have enabled the iCloud functionality for the given app and that you are logged into the same iCloud account on all of your devices that you would like to access your it Toolbox Premium subscription on.
If you are still having issues with accessing your subscription, please just get in touch with us via email at [email protected] and we will do our best to help you access it!