I can’t update the SEO panel

This may be a plugin or theme conflict. Please disable all plugins except Yoast SEO, and use one of the default (Twenty*) themes. If the problem goes away, enable plugins one by one to identify the source of your troubles.

If you can install plugins, the Health Check & Troubleshooting plugin offers a troubleshooting mode that will disable all plugins and change the theme for you, while you’re still logged in, without affecting normal visitors to your site. Once in the troubleshooting mode, please activate only Yoast SEO and attempt to reproduce the issue you described.

If you are unfamiliar with checking for conflicts, we’d like to point you to a step-by-step guide that will walk you through the process: How to check for plugin conflicts

I did all you say and the problem still thier and I discovered that the other meta box don’t save their value. So the meta box don’t save their value like Yoast SEO.

Thank you for help.
I have contacted the hosting and they fixed the problem and they said this.

According to our check, the issue was caused by the triggered Mod_security rules.

Modsecurity is the firewall which protects users from malicious software. Sometimes it marks valid actions as ‘malicious’ while users perform certain actions/run scripts on their website, they are also called “false positives”. In such cases, we whitelist rules for particular domains/accounts. It can also be disabled for the whole account, but we do not recommend doing it due to security reasons.

We have whitelisted the rules, please try posting once more and let us know in case of any issues.