A mobile number is required for Azibo registration for security reasons, specifically, to make sure the person logging in is really you. Azibo sends a code to your mobile device via text message to confirm that you are the one logging in, as an added layer of security on top of your password (also known as multi-factor authentication or MFA). If you have registered with a landline on accident, please reach out to Azibo’s customer service team to update your information. You can reach Azibo’s support team at +1 (855) 920-9907 on Monday-Friday, 9am-5pm Pacific Time or via email at support@azibo.com.