I have flashed back to stock many times with (N900VVRUEOF1_N900VVZWEOF1_N900VVRUEOF1_HOME.tar.m d5) in order to try multiple methods.
Rooted with Arabictoolapp - used rootchecker to verify/application also says true for root
installed SU from playstore to unlock bootloader using the adp method - shows developer mode to verify - using eMMc to verify CID starts with 15
installed twrp using official twrp app & also tried ODIN in another trial (picked verizon americas and got twrp-3.2.3-0-hlte.img.tar and twrp-3.2.3-0-hlte.img )
turned phone off and boot into recovery to verify; at this time i created a recovery
using MagiskManager i downloaded the zip (Magisk-v18.1.ip) and flashed using twrp - no errors but when i restart the phone it says Magisk not installed
next attempt was to extract the boot.img from the stock OF1 and then flash the Magisk - no errors but when i restarted the phone it says the same thing - Magisk not installed
another attempt was to patch the boot.img and got a patch_boot.img then using TWRP i flashed the patch_boot.img - restarted and magisk not installed
after further digging, i tried another method which was to unroot using SU, reboot, go into recovery to then install Magisk - magisk not installed
*note each attempt to install Magisk unrooted my phone
*was able to use Magisk-uninstaller-20190204.zip to uninstall Magisk manager from recovery - icon went away
anyways i am completely stuck now. any suggestions or comments on my approach?