Hi there! I understand that you're having trouble with Keepa not working on both Safari and Firefox on your iMac running macOS Sonoma. That can be quite frustrating! Let's see if we can sort this out together.

Here are some steps we can take to troubleshoot the problem:

### 1. Clear Browser Cache and Cookies
Sometimes, cookies and cached data can lead to issues. Let's clear them out:
- For Safari:
1. Open Safari, then click on “Safari” in the top menu.
2. Select “Preferences,” then go to the “Privacy” tab.
3. Click on “Manage Website Data…” and then choose “Remove All.”

- For Firefox:
1. Open Firefox, click on the three horizontal lines in the top right corner, then select “Options.”
2. Go to “Privacy & Security” and scroll down to “Cookies and Site Data.”
3. Click on “Clear Data,” and select both options, then click “Clear.”

### 2. Check Browser Extensions
Sometimes, other extensions can interfere with Keepa:
- In both browsers, try disabling all other extensions temporarily to see if Keepa works correctly.

### 3. Allow Exception Cookies
As mentioned in a discussion I found, adding exceptions for Keepa in your browser’s cookie settings can sometimes help:
- For Safari:
1. Open “Preferences,” go to the “Privacy” tab.
2. Select “Manage Website Data...” and add keepa.com as an exception.

- For Firefox:
1. Go to “Options,” select “Privacy & Security,” and scroll down to “Cookies and Site Data.”
2. Click on “Exceptions” and add keepa.com.

### 4. Update Your Browsers
Ensure that both Safari and Firefox are up-to-date, as updates can provide fixes for bugs:
- You can check for updates by visiting the App Store for Safari and using the Firefox menu for updates.

### 5. Restart Your Browser and Computer
After trying the above steps, close your browsers completely and restart your computer to ensure all settings apply correctly.

If Keepa is still not working, it could be worth checking if there are any known issues related to macOS Sonoma with Keepa. You can monitor community discussions or contact Keepa support directly at [email protected] for any larger issues related to their service.

Please try these steps and let me know if Keepa starts working again! Are you satisfied with the solution I provided?