iOS Offline Groupchat Message Delivery Issue

Job ID: 38569166

Budget: ₹750 – ₹1,250 INR

I'm facing a critical issue with my iOS app using Siskin SDK and Openfire server. Messages sent to offline users are never received, even after the app reconnects.

Troubleshooting Steps Taken:
- Checked server connectivity: No issues found.
- Tested with different devices: The problem persists across devices.

Error Logs:
- There are no error messages or logs generated when messages fail to deliver.

Ideal Freelancer:
I need an expert familiar with Siskin SDK and Openfire server, particularly in message delivery protocols. Experience in troubleshooting similar issues on iOS is highly desirable. Please provide a proposal detailing how you would approach this issue and the timeframe for a potential fix.
Related categories: Mobile App Development iPhone Objective C iPad Swift