Welcome to the Q&A Forum

Hi Ana, Please check this article for Wordpress optimisation guide here on the Moz blog.  It explains in detail problems with tags and the best practices to use them.  Usually, you want to noindex the tags on your WP site - keep them for navigation purposes if you want, but letting them be indexed can lead to duplicate content issues. If you are already getting some traffic on Tag pages, you can 301 to them right pages. I hope this helps. Regards, Vijay