Did you follow the guide completing the correct steps in the right order? It seemed to be important with regards to a succesful outcome.
I have not used the guide myself, but I did read it.
In my initial reply, I recommended creating an online G-Hub profile, because I was sure I had read somwhere, that custom profiles would be stored in the cloud, when logging in. I use G-Hub and created a profile only because of that.
But since I had some doubts if I remembered correctly, and it was not a complete succes the last time I was depending on it personlly, I decided to recommend backing up the settings file instead, as it was mentioned as the best method in several places. Also, that's what I used to do with the former LGS software
I'll look around and see if there's an explanation the the issues you've run into. As long as you have the settings file backed up, it seems it should be easily put back into a working user profile.
But I have not tried it personally
EDIT : I just remembered, I had to reinstall G-Hub because I couldn't load G-Hub, on a completely fresh Windows install only about a month ago. I re-installed the software, and without me being able to completely understand why, it was working fine afterwards.
Yould consider trying to go through the steps once more, if you have the time, confirming you follow the steps to the letter