Root LG Volt 2 Rooting Question

[Technologx]

I had rooted my LG Volt 2 and the rooting app on the phone showed me this other app to install to use supersu so I went to try and do that nothing happened. But that other app that I installed to have the supersu access removed the app I used to root my phone. Now I can't reinstall the app because my phone won't allow me. My question is, is what do I need to do to have my phone rooted again?

 

[Markkel]

I use king root, that might help

 

[Technologx]

That's what I used to root but like I mentioned in the post it had a app to install supersu and I tried it and it removed Kingroot and didn't even install supersu. Now I can't get KingRoot to install again.