Hello!
Is this your account or a corporate account? Most of the time, this occurs in a Corporate-owned account, and a change is made to the third-party security settings. It occasionally happens to my account when I fail to keep my Okta Fastpass SMS verification updated with the required Okta Password SSO updates that IT sends.
If you do have a corporate account -- reach out to your IT helpdesk and they can usually get you in and set-up again. If you have a personal account, you can email "***********" to inquire about getting your account unlocked and see if there's anything we can do help you. Sometimes you may have locked yourself out of a personal account, and the amazing Billing team can help verify you and get back in.
Hope that's helpful. 🙂 Thank you for being a Zoom customer!