Yes — after August 6, 2019, you will no longer be able to purchase tickets in the TriMet Tickets App. After December 31, 2019, mobile tickets will no longer be accepted as valid fare.
Be sure to use or exchange your mobile tickets and passes before then. You can exchange unused mobile tickets and passes for a free Hop card with equivalent Hop credit. Learn more about exchanging mobile tickets for Hop credit
If you’d like to continue paying with your phone, you can instantly pay an Adult fare with Apple Pay, Google Pay or Samsung Pay, or get the Hop Fastpass app to add a virtual Hop card to your mobile wallet. Learn more about paying your fare with your phone