Hi @Tonn333, can you describe the error you have when installing it? You can open a ticket directly on the Do U Copy's Discord channel if needed (link above)
Viewing post in Do U Copy? - Demo Version comments
Hi @Tonn333
Thanks for bringing it up. We'll change the app manifest so that it supports the itch client soon. However, you can still install the game by downloading the build from your browser , thus bypassing this error.
Feel free to reach out to info@fugamestudio.com or directly through our Discord if you need anything else.
Have a nice day.