Voice Clone

What is a custom voice?
How do I upload audio for Voice Clone?
How do I record samples, and what if the microphone does not work?
How do I check voice training status?
Where is my trained custom voice, and how do I use it?
Can I clone my voice for free?
Why can’t I create another voice when I still have characters?
Why can my voice read text but not sing a cover?
Can I use someone else’s voice or use the result in a commercial project?
My voice slots are full or I have fewer after a downgrade. Which voices should I keep?