I rooted my phone about a month ago. I am not familiar with flashing ROMs and what not so when the new KitKat came out I wanted to download it but didn't know how with my phone rooted. I looked up on YouTube how to unroot and go back to stock and there as a video for a "One click" unroot. So being unwise and an idiot, I downloaded it and it said unrooted, however it just deleted supersu and my phone no longer has root access however when I boot it up it still has the unlock logo and in recovery mode I get the green android with writing in the top left corner stating that ODIN mode is being ran. My issue is that ever since I did that, I can no longer log into any google apps such as playstore or even a google plus act..it just says there is a problem with the servers. Like I said before , I took it to someone who knew what they were doing and he said he would flash it back to stock unrooted, but during his troubleshooting, he said it kept failing and he didn't want to be responsible for messing it up further. If anyone can tell me what the hell I did so I don't make the same mistake again would be great, even greater if someone can walk me through how to get back to stock. I know this is a lot to ask, but like I said I have zero idea. From reading other posts, I will list all the info I have about my phone so that can be a starting point.
Model # I545
Android Version 4.3
Kernel Version 3.4.0
Any info or ideas would be great! again, feel free to include what a dunce I am because I sure feel like one!