User tags not working

Great module in concept, but after installation and setup I can't seem to get user tags to work at all. I added a user tag "TISTYLE" which has a replacement of "<h2 class="title">", and $TISTYLE$ shows up instead of its replacement upon either previewing or saving the node. On the other hand, things like "System tags", "Format tags", etc. seem to be working just fine.

I checked standard permissions (/admin/user/permissions) and those are good. Reptag permissions (/admin/settings/reptag/admin/permission) are also good (everything is checked for my role except for "Plain text replacements only"). Content Types (/admin/settings/reptag/admin/content) shows that the fields I'm using are allowing reptags to process.

I'm not sure what else to check, due to the lack fo documentation. Incidentally as a side note, I wonder if there is a simple FAQ or a basic "Getting Started" guide anywhere that someone can consult while we all wait for the official reptag documentation web site to finish transitioning?