Often, the best way to solve a problem you are having with display of any web-based software, including Duet, is to clear your browser's history and cache.

This forces the browser to request all new information from the web server, instead of just assuming that old information it had stored is good enough.

Mobile browsers

Android

The steps to clear your cache, cookies, and history may differ depending on the model of your Android device and your preferred browser. However, you should be able to clear your cache and data from your application management settings menu:

Go to Settings and choose Apps or Application Manager.
Swipe to the All tab.
In the list of installed apps, find and tap your web browser. Tap Clear Data and then Clear Cache.
Exit/quit all browser windows and re-open the browser.

Chrome for Android

Touch Chrome menu > Settings.
Touch (Advanced) Privacy.
Touch Clear browsing data.
Exit/quit all browser windows and re-open the browser.

Safari (Apple iOS)

Note:

The following steps apply to the newest version of Mobile Safari for iOS. If you need instructions for older versions, you might find them in Apple Support's Safari web settings on your iPhone, iPad, or iPod touch.

Open your Settings app.
Tap Safari.
Tap Clear History and Website Data and confirm.
Exit/quit all browser windows and re-open the browser.

Chrome for iOS

Touch Chrome menu > Settings.
Touch Privacy.
Choose the data type you want to clear.
Touch Clear.
Exit/quit all browser windows and re-open the browser.

Desktop browsers

Chrome

Click the "sandwich" icon (looks like 3 horizontal lines) in the upper right corner.
From that menu, hover you mouse over "More Tools" and then click "Clear browsing data" in the submenu.
Select the following: From the Obliterate the following items from: drop-down menu, you can choose the period of time for which you want to clear cached information. To clear your entire cache, select the beginning of time. You should choose at least "the past week."

Cookies and other site and plug-in data
Cached images and files
Click Clear browsing data.
Exit/quit all browser windows and re-open the browser.

Firefox

From the History menu, select Clear Recent History. If the menu bar is hidden, press Alt to make it visible.
From the Time range to clear: drop-down menu, select the desired range; to clear your entire cache, selectEverything.
Next to "Details", click the down arrow to choose which elements of the history to clear; to clear your entire cache, select all items.
Click Clear Now.
Exit/quit all browser windows and re-open the browser.

Internet Explorer 9 and higher

Note:

As of January 12, 2016, Microsoft has ended support for Internet Explorer versions prior to version 11, unless you are running Windows Vista SP2 or certain versions of Windows Server; for a complete list of exceptions, see Microsoft Support Lifecycle. UITS strongly recommends that you upgrade to a new operating system if your current system does not support Internet Explorer 11 and is not on Microsoft's list of exceptions.

Opera

From the Opera menu, select Settings, and then Delete Private Data....
In the dialog box that opens, select the items you want to clear, and then click Delete.
Exit/quit all browser windows and re-open the browser.

Safari

Safari 8

From the Safari menu, select Clear History and Website Data....NOTE: this clears everything.
Select the desired time range, and then click Clear History.
Go to Safari > Quit Safari or press Command-Q to exit the browser completely.

If you do not need to delete everything, you can follow these steps to just clear cache.

From your Safari menu bar click Safari > Preferences then select the Advanced tab.
Select: Show Develop menu in menu bar
Now from the menu bar click Develop > Empty Caches

Safari 7 and below

From the Safari menu, select Reset Safari....
Select only clear cache and cookies to reset, and then click Reset. As of Safari 5.1, Remove all website data includes both cookies and cache.
Go to Safari > Quit Safari or press Command-Q to exit the browser completely.