You can change the permalink for your blog post by changing the Title of your blog post.
The URL of your blog posts will always show up as yourcustomdomain.com/blog/blog-title.
Pro users have the option to customize the permalink for their blog posts. In the blog editor, click the “Publish” button, check the “Use custom URL” option, and then customize your blog post url. See the screenshot below.
In case you need assistance, shoot us a line at support@strikingly.com or chat with us.