Edit: yep same issue as abbdc1
I installed ikeywi and flipcontrol center and when I go into setting it says "there was an error loading preference bundle". I'm using the 5s. On willerz list it says its compatible.
Mobile Substrate has been update for the 5S, But have the tweaks your having trouble with been updated to work with the 5S (ARM64) ? Maybe they haven't & that's why your getting errors...
EDIT: Just found the list I believe you were refering to.. They are listed as working on A7 devices.. Ignore this ^^^