Hi!
On the archive home page, click the three lines on the upper left to open the dropdown menu. Then find the link for Archives, and click that. A list of subdomains will appear, with a green symbol to the right.
Find the subdomain for your story, click that green symbol, and you should see a list of the stories you have published in that subdomain. That‘s your Story Manager page for that subdomain.
Under the three dark green links is a pair of white fields. The first one allows you to select a specific chapter using the dropdown arrow, and the next one gives you the option to edit the chapter. Click the green GO! button once you’ve selected the chapter you want to edit, and you should be able to edit the chapter in the Rich Text Editor.
When you're finished editing, click the dark green EDIT CHAPTER button at the bottom of the RTE to save your changes.