In order to meet the requirements of anti-spam legislation, you must include a physical/street address as part of your email content. This address is used to identify the sender of the message and facilitate how this person would have opted-in and who they can contact to opt-out. Some content filters will scan for it and block/junk emails that don’t have it so it will also improve delivery.
In order to protect subscribers (and yourself), if a physical address is not included, you will not be able to schedule your newsletter.
Entering your company information is required when your account is created. To edit it, go to Account> Settings
If for whatever reason the company information is missing, a window will pop up asking you to fill in your company details.