Same problem here. Downgrade to Version 1.0.6 helped on my site.
Since Version 1.0.7 the plugin inserts backslashes, that seem to cause the problem with non-matching codes and not replacing code or text as it used to.
Deleting the backslashes did not help, since every time I click the save-button, the backslashes will be inserted by the plugin.
With 1.0.6 everything works fine.