This link I clicked from the /Downloads site does though :

https://draytek.co.uk/support/downloads/software/send/336-software/2524-smartvpnclient-551-msi

<EDIT> Same link as you posted !? and now your first link is also working for me and giving me an MSI .... No idea what I did back there. I think I'll just go home now </EDIT>

thanks for this and it will be helpful but follow-up question about command line options to intiiate a vpn profile connection. Are there any?

Rasddial / rasphone would be an option but would like to standardise on this client.