What is Lux Cache?How do I sign up?Is there a subscription fee?Is there a free trial?Can I cancel my subscription?Do you offer any free content?I'm having technical issues with the site. Who do I contact?Can I contribute to Lux Cache?How often is new content added?Is Lux Cache suitable for beginners?How do I access the sample packs and other downloadable content?I have feedback/suggestions. How can I share them?