Please follow the installation trouble shooting guide.

No, these are fixed functions. They operate with the default program that is set on the computer for that function.

Make sure that the keyboard is supporting this layout (e.g. you have a keyboard with a UK layout and you would like to use it on your TV with a German (DE) layout. In this case, the characters on the screen will not correspond with the keyboard.) your TV is supporting this language and language is selected in your smart TV as an input language(s).

The steps to change the language layout vary per TV brand / model.
You can usually find this in the settings on your TV, such as:
Menu -System > Device Manager > Keyboard settings > Options Keyboard > Keyboard Language
However, per brand / model, the above naming can be different.

See an example of how to set the input language layout correctly for a Samsung Smart TV on YouTube.

On a Windows computer you can use the preferred key combination to change the input language (e.g. Ctrl+Alt or Shift+Alt).
If you use the keyboard on a TV, make sure that your TV supports switching of the language input layout by an external keyboard. (Some TV-models only support switching by the remote control.)

It's not possible to provide a replacement receiver for this product.
This is due to the fact that during production the product and receiver receive a unique code, so the product can only communicate with the bundled original receiver.

Set the correct language as explained in the keyboard settings page

This keyboard should work with different apps. However, there is a known issue with Samsung TV's and keyboards from different brands, and the non-functioning of apps such as YouTube and Netflix We suggest to contact Samsung for more information and possible solutions.

• Clean your keyboard from dust and crumbles.
• If you are using it with a TV, make sure that your TV and/or the app, supports all symbols and characters of the keyboard.
• Improve wireless performance.
  See wireless troubleshooting page

• For best compatibility, use Windows Mediaplayer and Internet Explorer.
• Ensure that the Multimedia program you wish to control is selected as Default in the system properties.
• If still not working, uninstall any other programs/drivers related to keyboards.

Unfortunately, we do not have service centers to repair products.
A defective product should be replaced by your point of purchase during the warranty period.

Follow the steps in the trouble shooting guide.

We offer a 'return to retailer' warranty on our products. In case of a defect, you can return the product to your retailer with failure description, proof of purchase and all accessories. During the warranty period you will receive a replacement product from the retailer if available. For full warranty conditions you can consult: https://www.trust.com/support/warranty

This keyboard was not specifically tested with every model Smart-TV available, therefore we can't confirm compatibility for every model.

Basically, if your Smart-TV has USB keyboard support (check your TV documentation), the keyboard should work.