Now under the Other list, tap on Still have a problem.
After this, under Select a Topic, select Login.
You can see a Feedback and help option, scroll down more and click on Account and Profile.
Now you will see Settings and privacy under this, scroll down to Report a problem.
Go to the Viber website on your device.
If you don’t know how to report a problem to Viber, then follow the step by steps below. In this way, you can report to them your password issue and can request them to allow you to reset your password without your phone number and email. To recover your Viber account and its password without email and phone number, you can go to the Help and Support Center of Viber. How to recover Viber account without email/phone number
How to find old Viber account with email.
How to recover Viber account with email.
How to recover Viber account without email/phone number.