On SimDif sites, pictures zoom when clicked. So, you cannot put links on images in standard blocks.
However, you can use any one of 3 Mega button blocks to invite your readers to visit other pages of your site.
Find the Mega button blocks in the "Special" tab of "Add a new block"
● Mega button with preview: if the first block on the page the button links to has an image, the same image will also appear in the button.
● 2 Mega buttons with previews: this block works the same as the single Mega button with preview, but has 2 buttons.
● Mega button with image (for Smart & Pro sites). Create an image using graphics and text to advertise the content of the page you link the button to.
Watch the tutorial video:
How To Use Mega Buttons with Previews