Ok, let's hope I can get my settings back after doing this.
If not, then it's good practice for setting things up from scratch.
Once you've instaled resilio for the first time, you have a screen where you enter a display name for your computer.
This is what other users wil see when they look at the peer list for folders.
Decide what you want to be called carefully because you can't change it later.
Once that is done, you need to tick two checkboxes before you can proceed to the next step.
On the next screen you have a field to enter your email address to subscribe to their newsletter.
Luckily, they don't spam your inbox, or you can just give a fake email..
After that, that's pretty much it, you're at the screen where you can add folders.
Now some advice, because this happened to me while I tested it.
I thought I could just copy my resilio folder in %appdata%.
While that works to a degree, you will end up losing the info for your folders, for some reason it doesn't work.
I keep a text file of my secrets, or keys, depending on what you want to call them, that way I can easily re-add them later, which is what I will be doing after I submit this post lol.
I'm glad I only have only three keys to add.