Okay, so let's break it down.
Can you walk us through the process you are using
What and where exactly is it failing? (Booting twrp? Flashing magisk? Etc)
Are you using magisk or SuperSU?
I'm assuming magisk since you said you've tried the auto tool
You may have to attempt to root manually,
Unlock bootloader
Use fastboot to boot twrp
Flash latest magisk
Flash twrp (if you wish)
Profit
The blox2 site should have everything you need to know about this if you get stuck. I'll also be checking back to make sure everything went smoothly.
Also, if you are getting error 1 while flashing magisk there are some additional steps you may need to take to get it working:
1. Flash the stock boot.img
2. Remove everything (folders/files) magisk related in /data partition using adb shell (need root for this OR boot twrp using "fastboot boot twrp.img"
Hope this helps
So this is what I've done:
reflashed the stock Mini Rom taken from Blox2.com, everything works
downloaded & unzipped B2Autoroot (v1.3) to the laptop, laptop recognizes phone
went into Developer Options, checked OEM Unlock and USB Debugging
connected phone to laptop (phone still on)
started up x64_B2A
phone rebooted several times, window log showed everything running fine, I see TWRP on the screen a few times
I left the phone alone for about 10 minutes after the last reboot
after 10 minutes, I checked apps:
-Magisk Manager is installed but when I tap on it, it says to Install from Play Store, when I go to Play Store it says it can't be found
-SuperSU is installed but when I tap on it, it says SU Binary occupied with a link to How To Solve
-Rootchecker indicates I am NOT rooted
I tried using the older version of Autoroot that worked back in April, but no go either. So should I delete Magisk Manager and SuperSU and re-try? Or am I missing a step? FYI USB is set to exchange files. I also tried using the x32_B2A and that didn't do it either.