GET request with special characters non alphanumeric

I have an endpoint which use GET request to authenticate user. I tested with POSTMAN with the parameters (headers) of image 1 and everything was OK. A little observation, the values of a password are inside a yellow color rectangle and it changes a little bit in the URL.

Im use userId= 25845221;
password=Netz1sys#

When i teste in AppGyver i make the fallowing steps:
(1) Set the URL (Image 2.a).
(2) I use Http request FLOW FUNCTION (image 2 b)
(3) Finally, when Appgyver makes the GET request, in devtools i realize Appgyver delete the ‘#’ character (Image 2c).

Why is happening this, i cannot resolve this even i set up header in Appgyver as POSTMAN.