I need to contact another TM member

If you have bought from them or sold them something then you have their email address in the emails about the trade from Trademe. If they have current listings you could ask a question or contact them through the q & a. If they don't have any listings you could add them as a favourite so you get emailed if they do list something. If you know their name you can try social media and search engines.

Hugely disappointing that TM has withdrawn the option that allowed us to search for other traders via Community/Stats.  Another backward step in this crazy so called upgrade.

There is so much control now.  Ridiculous.

Kia ora Sarah, this feature is still available, this post has info on how to search for members.