Hello! I understand you're having trouble opening the Bill PDF in the NYSEG app on your Mac with OS X 10.15.7. Let's try to get that sorted out so you can view your bills easily.

First, can you tell me a bit more? Are you trying to open the PDF directly in the app, or is it downloading but not opening? Also, does the issue occur with all bill PDFs or just specific ones?

In the meantime, here’s a set of steps that usually help resolve issues with opening PDFs in the NYSEG app on a Mac:

1. Try Opening the Bill PDF from the Web Browser:
Sometimes the app might have trouble rendering PDFs correctly. Log into your NYSEG account using a web browser like Google Chrome or Safari and try to download and open your bill PDF from there. Many users have found this works well if the app struggles1.

2. Update Your PDF Reader:
Mac’s built-in Preview app usually handles PDFs well, but make sure your system and Preview app are updated. If you use another PDF reader, try opening the bill PDF with Preview as a test.

3. Clear Cache or Restart the NYSEG App:
Sometimes app cache or temporary glitches cause files not to open. Quit the NYSEG app completely and restart your Mac. Then reopen the app and try again.

4. Check for NYSEG App Updates:
Make sure your NYSEG app is the latest version compatible with macOS 10.15.7. An outdated app can cause display or download problems.

5. Try Downloading the Bill PDF and Opening Manually:
Instead of opening the PDF directly inside the app, try downloading the file to your Mac’s Downloads folder. Then open it from there using Preview or another PDF app.

If you’ve tried these already or the issue persists, there may be a specific compatibility or account-related issue. I can guide you through advanced steps or help you contact support directly if needed.

Would you like to try these steps together now? Also, please let me know if you get any error messages when trying to open the PDF.

Are you satisfied with the solution I provided so far?