Generate API Key – timing out

I am unable to generate API keys. It’s happening on multiple sites and multiple servers (and hosting providers.)

Sucuri: (1450320132) Register_site: Failed to connect to wordpress.sucuri.net port 443: Connection timed out. This generally happens when the API service fails to respond in time, you currently have configured the plugin to discard the network connection after 300 seconds. Wait a few minutes until the issue is resolved by itself, or change the timeout limit from the general settings page of the plugin, the option is named “API request timeout”.

https://wordpress.org/plugins/sucuri-scanner/