Hi, @n210y (n210y)​ 

Thank you for posting on our Community page!

Please review "Can’t add my existing account to a new or existing device" under the following troubleshooting guide:

For iOS:

https://help.okta.com/eu/en-us/Content/Topics/end-user/ov-ios-trbl.htm#Can%E2%80%99t

For Android: 

https://help.okta.com/eu/en-us/Content/Topics/end-user/ov-user-trbl.htm#Can%E2%80%99t

Here is a helpful video on it:

https://youtu.be/eBgPjOC5P0U

In essence, for security reasons Okta Verify can only be bound to one device at a time and can only be re-enrolled through self-service once you are signed in or with the help of your company's IT Support who handle your account. You'll need to use an alternative option to sign into your Okta account and enroll the device. If you do not have an alternative option, please reach out to the company's or service provider's IT support or Help Desk so they can help you enroll a new device and provide further assistance.  

While Okta provides the Product (Okta Verify app), individual account management is handled by your company or service provider.  

Thank you for reaching out to our Community and have a great day!

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