Hey,
I purchased my licence in 2007 through the Russian reseller ibresource, in 2013 it was transferred to you directly. So, I'm 15 years with you 🙂(a few days ago I bought Pages for my main project, so I'm an active customer)

Now I need to set up an English version of my project on a different domain, so I need Forum and Pages.

Do I need to buy a new separate license for it for full price?

Please be aware that the software can only function with 1 URL per installation (i.e. you can't have 2 URLs pointed to the same installation and it functioning at both).

If you are keeping the current license at the same URL and want to setup a new installation at a new URL, you would need to purchase a new license to run that new community at.