I imagine that it might need for you to go through some sort of CORS proxy maybe????
Probably.
Check out previous cloud var projects that use repl.it
I tried installing CORS but it still wont show up in Snap.
Maybe looks at someone else's working cloud var project?
Off the top of my head - hasn't programmer_user got a working one? ( I think earthrulerr was using it in a recent project????)
programmer_user turned off their server.
I looked at my old cloud var project (That no longer works),
and it is basically the same thing I have now.
OOP, I solved it. 
And what is the solution?
I see you are trying to test it. 
That is the html of the Success page!
Although I have a new problem, once I set a variable, I try to set it to a different thing, but it doesnt switch.
aah I see
When testing - monitor the repl console and see if your getting any errors
Is this considered an error?
[01/Oct/2021 16:16:55] "GET /set/hi/nono HTTP/1.1" 200 -
Seems like a ping, but it is red, so I dont know.
I think its just info
Yeah, but it isn't resetting the defined value from the url...
Delete is also not working