How to change Images on service page

Hi,

I´m wondering how I can change the images on the service pages.
Or to put it another way, how should the service page to be edited?

For example on the service page “data protection” there is pointed to the images “2166”, “2170” an “2211”.

e.g.: [/vc_column_text][vc_single_image image=”2170″ img_size=”420×180″][vc_column_text]

I don´t understand the syntax. There is no image with the name “2170” in the media database.

Was the site edited by virtual composer? I can´t find the opportunity on the service pages?

The images are not licensed an must be changed, correct?

Regards, Alex