OK, so WP to Twitter was working brilliantly for me for several years. Now, suddenly, it has stopped tweeting.
I can't figure out why. I've fiddled with all the settings, disconnected it from my Twitter account and re-connected it, created a new Twitter application to generate new Oauth tokens, and entered those tokens to re-connect it yet again. No results. I did a test tweet yesterday and it worked -- it's apparently connected correctly.
However, this morning's scheduled post did not generate a tweet.
Problem is, I can't tell what's wrong because I don't have access to error codes of any kind. Is there an error log that saves codes or error messages somewhere?