ShortPoint Link element does not allow you (yet) to modify the font size of the link from it's settings. Nevertheless, you can easily do it with some custom CSS. 

Step 1: Prepare the Custom CSS code

Here is the Custom CSS code we will use to change the font size of the link text:

  font-size: 50px;

You can use it along with the code that changes the size of the link icon:

.shortpoint-icon {
  font-size: 50px;

Note: feel free to indicate your desired value in pixels.

Step 2: Insert the code into the element

To change the font and/or icon size, please open the settings of the Link element and switch to Custom CSS tab as shown in the animation below. Insert the code into the Custom CSS blank field. You can use one of the parts of the code above or both at the same time, as the animation suggests:

After you are happy with the result, click Update. That's it.
Happy resizing!:)