Hi there! I see you're having trouble uploading files using the Drime app on your Mac with OS X 10.15.7. Could you tell me a bit more about what's happening? For example, do you get any error messages, does the upload start but never finish, or does it not initiate at all? Also, are you uploading through the Drime app itself or via a web browser?

Meanwhile, I’ll guide you through some basic checks and fixes to get started:

1. Check Your Internet Connection: Sometimes uploads fail if the connection is unstable. Try opening a webpage to confirm your internet is working well.

2. Restart the Drime App: Quit the app completely and reopen it to clear any temporary glitches.

3. Update the App: Ensure your Drime app is the latest version. Updates often fix upload bugs.

4. Check File Size and Type: Make sure the file you are uploading isn’t exceeding any size limits or unsupported formats.

5. Free Storage Space: Verify that you have enough storage space available in your Drime account.

6. Try Uploading via Browser: If you’re using the app, try login to your Drime account in Safari or Chrome and upload from there to see if the issue persists.

If you’ve already tried any of these, please let me know which ones, and if possible, share the exact error message or behavior you observe. That way, I can help you dive deeper into this issue.

Are you ready to try these steps, or do you want me to walk you through any of them?