Gutenberg is a fundamental change to the way you create content. Instead of writing paragraphs and headings and adding media, you will now use blocks. If you aren’t WordPress 5 ignore this page.
The Loan Comparison block is in the Widget section:
Once you have selected the Comparisons block you can change the table number:
The selected table number will be displayed in the block description. When you publish the page (or post) you will see your selected table.
If you are using the free version you will only see the default table – changing the table number won’t do anything.
That’s about as complicated as it gets.