Hi there! I understand you're having trouble uploading files on the Payhip app—specifically, uploads are either very slow or get stuck at 9% or 78%. Let's work through this together.

First, can you tell me a bit about the files you're trying to upload? Are they large files, or a specific file type? Also, are you using the Payhip mobile app or uploading via a web browser on your Windows device?

In the meantime, here are some steps that often help with stuck or slow uploads:

1. Check your internet connection: Ensure you have a stable and reasonably fast internet connection. Sometimes, slow upload speeds or interruptions can cause uploads to stall.

2. Try uploading smaller files: If your files are very large, try uploading a smaller file to see if the issue persists. This can help pinpoint whether file size is the problem.

3. Clear browser cache or app data: Since you're using WebKit on Windows, try clearing your browser cache. This can help if stored data is causing conflicts.

4. Disable any VPNs or proxies: These can sometimes interfere with upload processes.

5. Try a different browser: If possible, try using a different browser like Chrome or Firefox to see if the issue is browser-specific.

6. Log out and log back in: Refreshing your session can sometimes resolve upload hiccups.

If none of these help, could you please confirm whether you experience the issue only with certain files or all uploads? Also, are you seeing any error messages or just the progress stalling?

We can then explore more targeted fixes or check if there are any ongoing service issues on Payhip's end.

Looking forward to your reply to assist you further!