Phone [Q] Root Beyond B78

I also used android beyond B78 and I also want to root this device, my first ever root this device uses EROOT and successful , but with my limited knowledge and install one of the antivirus applications, android back to normal and I tried to root again using the same application but this device can not root again, I try again with KINGO, but still can not. Is there a root application compatible with this device? Thanks
Model : Beyond B78
version : 4.0.9
device product : hexing15_6626_gb2
hardware : MT6575