Device not certified means you will not be able to install important apps like GOOGLE PAY, Netflix, HBO, Some banking apps etc.
With Google trying to discourage unlocked bootloader, root and any type of system modification, you can see your
play store device status move from certified to uncertified. There are several reasons for that like bootloader image
fingerprint flags, bootloader unlocked status being orange instead of green, modified boot image or even OEM's
non-complaince with [color=rgba(0, 0, 0, 0.87)]Google Services Framework Android ID
If You are rooted with Magisk, you can get back to device certified on Google in 3 easy steps in the video above.