problem with upgrading to Catalina OS
Hello guys, I'm trying to upgrade my MacBook Pro to Catalina OS, currently I have macOS High. Sierra Version 10.13.6, I tried to download the OS from the App Store but when I press the download button, nothing happens at all, download doesn't start and when the the updates it doesn't show any updates, how can I update my Mac to the new OS?
MacBook Pro 13″, macOS 10.13