Considering certification requirements
Before an application can be tested or published on a mobile device, a certificate is required. A certificate is an electronic document in the form of a file that is stored on the developer's hard drive, and it is accessed by Stencyl when creating the game for testing or publishing on the mobile device.
Certificates for publishing games to the Google Play Store and to the Apple App Store can be obtained by signing in to the developer's account on the respective organization's website. For the specific steps, please follow the instructions provided by Apple or Google as required.
It is very common for developers to experience difficulties with creating, obtaining, and implementing the required development certificates (especially for iOS devices, for which provisioning profiles are also required), as the process is widely acknowledged to be somewhat convoluted!
Note
One of the most important things to understand about certificates is that the certificates...