Is anyone else having trouble with crosswords@spectator.co.uk? My email entry has been rejected twice as “undeliverable”. Use this every week and no trouble till now.
The plural in the Spectator address is important, If missed (I know because I have done it - more than once 🙄) the result is a bounce. I do not suggest that you, Hypotheses, are as clumsy as me. Your problem may be something completely different.