Hi,
That's exactly how it's supposed to work! :) The different digMeta plugins adapt to the differences in each DNN module it supports.
When using the Text/HTML plugin, digMeta would have no idea where to put a NEW Text/HTML module. So, you can only edit existing content with the Text/HTML plugin. This is great for when you or your clients have certain Text/HTML modules that they always modify like many News, Daily Specials, any Text/HTML module they want.
With the DNN Blog plugin, you need to select one, and ONLY one of the categories. When posting to the DNN Blog, you are required to a specify blog to post on.
For example, the Ventrian News module allows you to have multple categories, or NO categories, so the digMeta plugin for Ventrian News will accept 0 to many categories.
Thanks,
Mike