Most likely caused by cache plugins. Disable all the cache functions, then try to connect Jetack again. it should work.
please re-enable this. When switching to/from the Markdown tab to html or visual tab, html tags were screwed up.
you don’t update the username, instead you update the wp_user-settings field that belongs to that user. you need to set the wp_user-settings field of that user to null first. when you log back in again, WordPress will load the default setting for that user.
