Thank you Liew for your reply.
Unfortunately, I am unable to log into dev.buggyman.net to make those suggested changes.
When I go to https://dev.buggyman.net/wp-login.php it does not recognise my old password.
I was able to reset my password by manually changing the reset email url to dev.buggyman.net. However when I try to login to dev.buggyman.net/wp-login.php it redirects me to buggyman.net/wp-login.php.
Could you advise on next steps to try here?
Thank you again for your help.