I just want to take a minute to say Big Thanks to the developers. Works like a charm. I'm on a LS998 converted to US998 with TWRP and magisk. When I installed this rom it did not wanted to register on Sprint Network. So I downloaded the Sprint mod...
i think someting wrong
two way address in cmd
goto your platform-tools folder directory
shift key + right click
click cmd here
and try again
Have you bootloader unlocked and rooted?
For those still on Sprint, please see the Sprint thread created by @JWnSC to help Sprint users on converted LS998/US998 who want to keep using Sprint