"Message not delivered" when I reply to customer messages in inbox

Please check the pictures

This client sent a message yesterday, I reply today, a few hours apart, but when I send a message to another client, it is sent successfully, why is this?

Thank you so much

Hi, @Ajing .

Thanks for reaching out and sharing your question here in the community!

I understand you’re experiencing issues when using Inbox and sending messages that do not deliver. To gather a bit more context, could you answer the following:

  • Provide a timeline of when the Inbox issue first started.
  • Is this issue happening with all customers or just the specific one you’ve mentioned?
  • Have you tried sending a message using a different mobile network or another WiFi network?

Looking forward to your response!

Hi @Victoria_13

Thank you for responding, check the answers

  • Provide a timeline of when the Inbox issue first started
    [About 14 hours]
  • Is this issue happening with all customers or just the specific one you’ve mentioned?
    [Just the specific one I mentioned]
  • Have you tried sending a message using a different mobile network or another WiFi network?-[I change another WiFi, but still does not work]

No problem, @Ajing . Thank you for providing more context.

With the specific customer, is this just happening on the storefront Inbox chat or is it also happening with Instagram and Facebook Messenger chat? Also, have you tried replicating this issue by sending a message to see if it was successfully delivered?

Our team may need to take a closer look to see if we can replicate the Message not delivered error. If the issue persists, I recommend creating a support request via the Shopify Help Center to get in touch with an advisor. After following the prompts on our help center page, you’ll be able to see our available support options displayed.

Hi @Victoria_13

Yes, I try to resent the messages more times, but the same result, and I try to send the same content to another custom, it successful delivery.