it's probably a cloudflare or DNS issue, largely not on your end - it could be literally just a random thing.
Sometimes the DNS on this website takes a break and runs off to mars. (That's me being a dork)
Anyways, TRY again and see what happens - if it STILL occurs same time of day same thing or anyhting it could be a bug that needs to be sorted.
If it's a one off thing, it should be sweet?