Hi! I assume you're using the Mac version? It had some issues with that. The reason is that MacOS can be pretty restrictive with indie games that are not made from people within the Apple Developer Program (which costs 99 USD a year). The fourth option here (and with more info in the comments section) could work to circumvent this:
https://osxdaily.com/2019/02/13/fix-app-damaged-cant-be-opened-trash-error-mac/