It's pleasant enough to look at but desperately in need of some niche-specific visuals IMO. A logo, the node icons etc. could all do with some customisation. Also, the default no-avatar user logos (the male/female icons) could be changed to something niche-specific. The node title backgrounds (the dark bar) is also a good place to put some subtle niche-specifc faded backgrounds in.
To be honest, it all ends up looking a bit bland as a result, you need an edge in this niche because it's quite crowded. I would also like to see the default Cookies notice expanded to include a sentence or two actually telling visitors in a nutshell what your site is about (it also seems set to show permanently, so I can't dismiss it, which would be handy, I only need to read it once).
Apart from the visuals, it's quick and easy to use, so a good start, and you can always add to the visuals as you go along.
Regarding the conversation, did you mean the welcoming message? That is because it was set to be automatically locked. You can always start a new conversation with me either there or here as well if you need to contact me.