NICE DCV --init to auto start application is starting then in half screen and black background

so i just started out with nice dcv, and creating a session works fine. but if i do this dcv create-session --init init.sh elliot this is how my init.sh looks like:

#!/bin/bash
# Navigate to the application directory
cd ~/Downloads/

# Start the application in the background
./Default\ Linux\ desktop\ 64-bit.x86_64 

Above is the screenshot, when this opens, i have like an "X" on my cursor, that makes me unable to interract with the screen / application also.

but if i just do a dcv create-session elliot which creates a normal session and i go to the desktop to run this application myself, this opens up in a full screen and i can interract with the window.

I do not know if i am missing something required in the init.sh