Have you tried reinstalling the Super SU app or Superuser by Chainsdd? See, if that works.
Paying is a waste of money, IMHO. Read and research before you root or flash custom ROMs. If you have gotten this far, take the time to learn it and then you'll get the confidence to tinker a little bit more.
Now, it's your money = your decision. If you don't like to tinker or experiment, then I wouldn't continue on the rooting/flashing ROM path. There are some great youtube videos and XDA forums have step by step instructions. People brick their phones because they don't READ and follow directions.
Ultimately, it's a matter of if you have time, the willingness to experiment, a little bit of tech savvy (not a lot, just a little bit), and want a nice running phone. I'm rambling a little bit here but good luck in whatever you do. Rukbat or others will probably chime in and give you better information.
As far as ROMs, for the Note 2 you have some choices:
4.3/Touchwiz
4.3/Touchwiz w/Note 3 features (2 ROMs and both are very good)
4.4.2/Kitkat but no Touchwiz (It's like having a Nexus)
4.1.2/Touchwiz : lower android version. Never tried it but they are probably very smooth because they have had time to tinker with them.
I thought that before I could install any app that needed root permissions, that the phone must first be rooted. So I have been trying to complete the root as a first step, but I am not sure that what I am using is first unlocking the boot loader. If not could this be the problem?
Here is my Odin v3.07 log when I try to root my phone:
<ID:0/005> Added!!
<OSM> Enter CS for MD5..
<OSM> Check MD5.. Do not unplug the cable..
<OSM> Please wait..
<OSM> CF-Auto-Root-t0lteatt-t0lteatt-samsungsghi317.tar.md5 is valid.
<OSM> Checking MD5 finished Sucessfully..
<OSM> Leave CS..
<ID:0/005> Odin v.3 engine (ID:5)..
<ID:0/005> File analysis..
<ID:0/005> SetupConnection..
<ID:0/005> Initialzation..
<ID:0/005> Get PIT for mapping..
<ID:0/005> Firmware update start..
<ID:0/005> recovery.img
<ID:0/005> NAND Write Start!!
<ID:0/005> cache.img
<ID:0/005> RQT_CLOSE !!
<ID:0/005> RES OK !!
<ID:0/005> Removed!!
<ID:0/005> Remain Port .... 0
<OSM> All threads completed. (succeed 1 / failed 0)
The first time I did this SuperSU was installed but did not work.
On subsequent tries, SuperSU was removed and never replaced. Also from the Odin3 v3.07 Log File a recovery.img and cache.img is being written to memory. This looks like a recovery and not a rooting effort. If so, why is a recovery being done instead of rooting, and maybe that is why I can't root the phone.
to anyone out there, does the Odin3 log file output give any indication why the phone is not rooting?
Also I have read that the boot loader must be unlocked before a phone can be rooted. I assumed this was done all at one time.
Here is the link to the steps I used:
[Beginners Guide]How to root Samsung Galaxy Note 2 - xda-developers
Anyone have any ideas.