This app is so easy to use, the rules for tagging are so easy and logical. But it only works 50% of the time and the support provided is basically non-existent. If the app worked it would be the perfect tagging app. But at this stage, I cannot recommend it. So disappointing.
I'm sorry for the inconsistency you experienced with Tag Robot, App is now under a new developer and has been improved significantly to avoid any such issues, also now you can expect a very fast response to your support requests!