Almost all those errors.....522, 524, 525.....are all the fault of the site whose server uses Cloudflare. CRF uses cloudflare.
In the forum's case, the delays were most likely caused by database updates or server maintenance. CRF probably has a decent sized database to update, which would explain the time out error.
When you get those errors there is a site you can go to,
IsItDownRightNow.com, to see if the site is down for everyone or just you................
HOWEVER, Shaggy needs to know that his site is taking more than 30 minutes for update/maintenance.