A. 1. Keep a record: If you encounter non-responsive users, keep a record of your interactions. This can help you track who has not responded. 2. Use the 'Follow Up' feature: If you have messaged a user and they haven't responded, consider sending a polite follow-up message to check in.

B. 3. Explore other listings: If a seller is unresponsive, consider looking for similar items from other sellers. This can help you find what you need without waiting.