Android app is not working

[Linda]

It keeps saying that my device is not certified for google play service. How can I do to fix it?

[Carrie_Gu (Carrie)]

How to Enable Open GApps in FydeOS v18 and Later Versions?

Starting with FydeOS v18, significant changes have been made to the way we distribute the FydeOS image. The ‘Developer Mode’, which was previously enabled by default, will no longer be activated autom…