Big thanks to jonquilnatrix 
Sadly you can't use saveeditonline.com by it's self on this game save files, the game won't load the modified save files, it detects that the save files have been modified.
However, great news, as
jonquilnatrix informed me below, there is a few ways to get past this.
As he said below, and I'm reposting in here so it's liked to savesditonline.com post.
There's a bunch of potential ways around that.
Option #1 Repack the Save (Effects only Single Save):
a) Go here and follow instructions
You must be registered to see the links
Option #2 Delete the Keys (Effects ALL Renpy Games):
a) Open security-keys.txt in your tokens folder (in Windows found in C:\Users\****\AppData\Roaming\RenPy\tokens )
b) Delete the keys (everything except the words "signing-key " and "verifying-key")
c) Save - Then modify the file properties to be READ ONLY.
Option #3 Modify the SaveToken file (Effects only Single Game):
a) Open the savetoken.py found inside the "Renpy" subfolder of your installed game.
b) Find the line "if token_dir is None:"
c) Change the word "None" to the word "True"
d) Save
Option #4 Just Use the Dev Console to Cheat
a) Enable dev console by downloading any of the
Unren.bat or
Unren-forall files and save it in the games folder.
b) Run it and choose the option to enable dev console.
c) Load any unmodified save then hit Shift + O to open the console
d) Change whatever variable for example typing "pl.money = 5000" would give you $5000. You can use variable names found on saveeditoronline but for anything on there that is either 1 or 0, you will just use the words True or False in the console. For example to turn on the Phoebe route type " MC_IsPhoebeRoute = True". Also if you want to check what value something currently is in your game you can type "watch" followed by the variable name, then to make that text go away type "unwatch" followed by the variable name.
