Yes - the shop can't send any emails at the moment. Which is causing an internal error when TB tries to change the order status without having send the confirmation email.
Just noticed the timeout message in the error log so the two messages I see on failure are
[Thu Nov 13 14:56:34.288173 2025] [fcgid:warn] [pid 98322] [client 2.126.40.62:53215] mod_fcgid: read data timeout in 60 seconds, referer: https://ashtonjones.uk/adminXXXXX/index.php?controller=AdminEmails&token=9b2bb752062e6115d9196c18d56792bc
[Thu Nov 13 14:56:34.288230 2025] [core:error] [pid 98322] [client 2.126.40.62:53215] End of script output before headers: php82-cgi, referer: https://ashtonjones.uk/adminXXXXX/index.php?controller=AdminEmails&token=9b2bb752062e6115d9196c18d56792bc
The SMTP settings in the configuration all work for my mail clients on MacOS, iOS and iPADOS
When I click send test email on the Advanced Parameters/Email page I get the rotating arrows in the top LH corner of the window then after a minute or so the Internal server error message below the Send Test Email box.
So I'm inferring there's a problem contacting the SMTP server.
So the problem is communication between TB and the SMTP server so I should be talking to my ISP?
If there was a config problem I'd get a password invalid message etc.