Here is the response without any specific references:
## Explanation
It seems that your operating system and the browsers you are using are no longer compatible with iCloud as of the current date.
The operating system you mentioned is quite outdated. Technology companies typically support the latest major version and the two previous versions with security updates, but older versions eventually become unsupported. As of the current date, your operating system version is likely no longer receiving updates or support, which could explain why iCloud is no longer working with your system.
## Solution
To continue using iCloud, you will need to update to a newer, supported version of the operating system if your Mac can handle it. Upgrading your operating system to the latest version should allow you to regain access to iCloud and ensure you have the latest security updates and browser compatibility.
If upgrading your system is not possible due to hardware limitations, you may need to consider using a different cloud storage service that still supports your older operating system version, or look into purchasing a newer device that can run the latest operating system.
Or try other browsers such as Firefox, Chrome, Brave browser, etc. as they may still be compatible.