Customer context: The customer has encountered an error message while trying to change their subscription plan in LiveAgent.
Customer: Why I see "Plan was not upgraded" and "Server responded with error: Current billing period is not settled" error message when I try to change my subscription plan?
Answer: The error message "Server responded with error: Current billing period is not settled" appears because you cannot change your subscription plan within 24 hours before your next billing day. To be able to change your plan, you need to wait until the next billing cycle begins.