Hi Michel Floyd
Excellent content, it looks like the slug of Parts 1, 2, and 3 are the same thing and redirect to part 2 every time you click on Part 1 & 3.
You can check out this guide on how to edit an article slug: support.hashnode.com/en/articles/6423386-editing-…
You can also consider changing the title of the posts to include the parts i.e "GraphQL for SQL Developers - Part X"
This way it'll be easier to know that they are series.