Hi there! I understand you're having trouble uploading a picture for your album cover and editing other details in the Melodista Music Offline Player. That can be really frustrating, so let’s work together to get this sorted out.

First, could you confirm whether you're trying to upload the cover image in the right format? Melodista typically requires images in standard formats like JPEG or PNG to ensure compatibility. Also, make sure that you're using MP3 files, as other formats like video or M4A aren't suitable for cover art editing.

Here are some steps you can follow:

1. Check the File Format: Ensure that the image you’re uploading is in a suitable format (JPEG or PNG) and that the music file is in MP3 format.

2. Restart the App: Sometimes, simply closing the app completely and reopening it can resolve minor glitches.

3. Reinstall the App: If the issue persists, consider uninstalling and then reinstalling the Melodista app. This can help reset any settings that may be causing the problem.

4. Free Up Space: Ensure that your iPhone has enough storage space available. Low storage can sometimes prevent uploads and edits.

5. Update the App: Check if there are any updates available for the Melodista app in the App Store. Updates often include bug fixes that could solve your issue.

If you've already tried these steps, let me know, and we can dive deeper into troubleshooting or look for any known issues with the app that might be affecting the upload function. Additionally, if there's an issue that has been reported recently by other users, it may be worth checking the Melodista help page for specific guidance: Melodista Helpie FAQ.

Are you satisfied with the solution I provided, or is there something else you would like assistance with?