Hi! I'm considering Tier 2 and have a few questions before purchasing:

1. Does Tier 2 include full BYOK, and can I generate unlimited posts using my own API key?
2. Which AI providers/models can I use with BYOK?
3. What can be automated through the API/n8n? For example: product → article → affiliate links → publish automatically?
4. Can I use the automation across multiple websites/projects?
5. Most importantly, can I export or migrate all my articles/content if I later want to move the websites elsewhere (e.g. WordPress)?

I'd like to make sure the content I create remains fully portable and isn't locked into UseArticle.

Thanks!