Hi,
I have a similar problem.
I started this thread
https://wordpress.org/support/topic/smtp-error-failed-to-connect-to-server-connection-timed-out-110-111?replies=1
and I would like to close it, because it contains my email address. Is it possible?
You can try disable the plugin and delete any records or tables associated with it. Make sure you backup everything before clicking delete button anywhere.
Which theme do you work on?
