That doesn't mean you can't use Zelle altogether. Zelle has only discontinued its standalone app, so you can still send money using Zelle if your bank belongs to the Zelle network

Visit enroll.zellepay.com to check if a bank supports the service. Once a user logs into a bank's mobile app or website, they can typically find Zelle under the "Payments" or "Transfers" section. The switch may require re-verifying an email address or phone number previously associated with a Zelle account.

Person-to-person money transfers are now only available through the banks and credit unions that work with Zelle.