The application installer was unable to install any packages. Please ask the package developer. what can i do to fix that? (im trying to install EZ-Crosshair Extension and get this error )

I bought this product in the first minutes after it came out of early access, and when I tried to import my crosshair from CS2, the crosshair did not change from the deafult. I do not know, maybe I did something wrong when I imported it?

Is there any chance that this software (EZ-Crosshair) would work on the Steam Deck console if a mouse and keyboard are connected to it?

When using the app, my mouse sticks and starts working poorly at the moment it just stops along with the keyboard.

Crosshair X removed the option to run the software without steam. I dont like tools spamming up my filters and statistics. Therefore im looking for an alternative. Is this a feature within this app?