I suspect my one-week trial ended today and my sidebar is displaying oddly (numbers instead of categories and subcategories).
The plugin website has a message on it that points to the “one-week trial end” being the problem. Here’s the message displayed there: “Your trial expires at 1970-01-01 00:00:00 GMT. Upgrade here before then to retain any premium changes made!”
Would you mind posting a link to your catalog page? Is there anything else that was changed other than the trial ending?
If you try deleting the plugin and then re-installing it, does that resolve the issue? Product, category, etc. data is saved to the WordPress database, so none of it should be lost in the process.