Okta Verify binds to a single installation. If you uninstall it, reset, or change phones, you need to reset Okta Verify. Here is how you can do it: https://support.okta.com/help/s/article/Resetting-your-Okta-Verify-Token. If you still need help, please contact your IT Department and they can reset it for you. Thanks! Okta Customer Support