Running v3.0.4-beta.23.1 on Ubuntu 20
Created ‘test’ user account by registering (rather than in Admin panel). User appears in admin panel as customer and is active.
Sign in as customer, add items from menu and click checkout. Receive the following yellow message: “Almost There, please log in or register to complete checkout”
If I go into admin panel and enable guest users to place orders, I can complete the order (which it adds to my order history). If I turn off allow guest orders, the message returns.