All my websites (more than 10) getting Error 522 Connection timed out, any help on that please, thanks.
That’s a clear indication there’s an issue with your webserver. Pause Cloudflare and check if you can reach your sites at all and then make the necessary adjustments to your server to get the sites back online. Only then unpause Cloudflare.
522s are covered at Community Tip - Fixing Error 522: Connection timed out