I did the root with the quick and simple Root setup. So do you think that is what caused my problem? I just rooted the phone and then did nothing else to it.
Rooting since before the 23C update meant OTAs would fail. ANY modification of the system partition (which rooting does) meant that any and all OTA's would fail, regardless of whether you had TWRP installed or not. Basically, you had to flash back to complete, unrooted stock, and then take the OTAs.
Whenever an OTA comes out, and if you're phone has been rooted or modded in any fashion, it's best to hold off on any OTAs until you have verified what steps are necessary to obtain the OTA.
Or, if you are on complete stock and want to be able to root, again it's best to wait and see what others have to say on whether it's rootable or not, or if you can flash back to a previous version that allows rooting and/or bumping (installing TWRP). Otherwise, you might take an OTA that fixes the root exploit and/or the bumping exploit and there will be no turning back.
And, to blame Verizon for fixing the root exploit, how is that bad in all reality? It's an exploit that can be "exploited" (hence the name exploit) which means, someone could construct a rogue app and gain root access to your phone and then have access to your private information, delete/steal pictures, passwords, account information, etc. Oh wait. The root app IS that rogue app!
(Not really but you get my drift and it does require a few other things in order to gain it.)
In reality, rooting is a risk that opens your phone up to possible security issues, hence why they patch root exploits. The misinformed are the ones that feel Verizon is taking away your power. In reality, what they are doing is taking away the power of the thieves, etc. So really, you should thank them!
But, I understand people want more control over their phone, and that is understandable. But, for me, the LG G3 is the first phone where I don't have the need to root. I used to root only because of Titanium Backup, but with the LG G3, it comes with the LG Backup tool which does exactly what TiBu did, but doesn't require root since it's a system app built into the software. Of course, hopefully there aren't any security exploits with it. But, at this time, due to the backup tool, I have no need to root at this time and I haven't done that with any Android phone I've owned until now.
That says a lot if you ask me. I really think the LG G3 is the best Android phone I've owned so far.