NGUI's support forums are a wealth of information that have been filled by 6 years of dedicated support, but times are changing and so should the support. The best place to ask new questions that haven't already been answered on the forums is in Discord:
https://discord.gg/tasharen -- look for the #ngui-support section.
For those that don't know, Discord is a text / voice communication program, and it's accessible via your browser.
I hate forums. Always did. Chat is much easier, and with much better response times to boot as I'm always there when I'm awake.