Pretty straight forward error message I receive when I try and send private messages Could use help in debugging. I had been able to send messages “amongst friends”. It worked for a long time. I had not tested in a while and now it does not work. I have it working on other sites.
I deleted every plugin except buddypress and used 2017 theme—get same results “Message was not sent” Please try again.
It’s difficult to debug from just that error message.
But it is a generic error that is only sent when the message fails and the error is not a WP error.
From your description, the error is specific to a single site, so something has changed on that site or on your hosting plan.
Using WP_DEBUG may give more info.