• What if the merchant has an issue with the SmartSpeaker?
• How do I replace the SIM card in the SmartSpeaker?
• What if the merchant's registered mobile number is unavailable for receiving OTP?
• What if I don't receive the service activation confirmation SMS?
• What items should be returned by the merchant during reverse pick-up?
• How do I update reverse pick-up confirmation in the ACE app?