When we update the DealPOS version to add new features or fix bugs, there is sometimes a cache issue in the browser that causes minor issues. It may be fixed by clearing the cache on the browser you're using, In this article, we'll show you how to do it on Mozilla Firefox:

I. Using Alternative Button

Step 1. Press button Ctrl + Shift + Del

Time range to clear "everything", and "Clear Now"

Clear Browsing history on Mozilla Firefox - Using Alternative Button

II. Using Firefox Interface

Step 1. Click the button on the right top side panel Mozzila, and choose "Options".

Clear Browsing history on Mozilla Firefox - Firefox Interface

Step 2. Select Privacy & Security - Cookies and Site Data - Clear data

Clear Browsing history on Mozilla Firefox - Firefox Interface, Privacy & Security

Step 3. Tick as this image below "Clear"

Clear Browsing history on Mozilla Firefox - Clear Data

III. Refresh Firefox

Step 1. Click the button on the right top side panel Mozzila, click the button "Help", and click "troubleshooting information"

Clear Browsing history on Mozilla Firefox - Troubleshooting Information

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Step 2. Click refresh Firefox, and click Finish

Clear Browsing history on Mozilla Firefox - Troubleshooting Information - Refresh

Note: if you use step 2, your setup printer margin will be back to default. If you want setup it back, you can click menu - print - and follow this

Clear Browsing history on Mozilla Firefox - Printing configuration / setup

Video For Sell Page Error When Open In Mozilla Firefox (Clear Cache)

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