Insert shortcode into page
You need to use the shortcode [stm_motors_vin_decoders] in pages when you want to display Motors Vin Decoder Input Field.
So, after selecting the most suitable VIN Decoder provider in a free or pro version of the plugin, you will place the shortcode [stm_motors_vin_decoders] to the page and post it to display Motors Vin Decoder Input Field like below:

Write the standard shortcode here and update the page to see the result:

Here the Motors Vin Decoder Input Field is ready to get any VIN numbers to test due to provider service:

Enter any available VIN number to check and click Apply:

Search for Motors Vindecoder Input from the Elementor plugin elements list and drag it into your page:

You will see the result directly then:

Search for stm vin decoder field from the WPBakery plugin elements list:

Save changes and update the page:

You will get the same page result as what you did with the shortcode above.