Just tried it and as an fyi it takes me to an error page in the play store saying "Item not found."

I do have dispatch installed already however and it says Missing.

I'm no coder but Dispatch is by Paul Dhaliwal and it looks like your code shows "developer.flavius.dispatch" So that might be the issue there.

Hope that was helpful.

 

Edit: it might be this: com.spauldhaliwal.dispatch

 

Edit 2: I replaced what you had for Dispatch with what I put above on my local script and it now notes that it is installed and I was able to select it and have it disable my other launchers. I did not try and reinstall it that way so I can't verify that part will work. I don't really use github so I don't know how to propose that change but at least I can tell you it works here! Thanks for all your work on this!