“Voucher already used” error on a different deviceCommon cause: Customer purchased a voucher for one device but is attempting to redeem it on a different device. Vouchers can only be used once, even if the customer owns multiple devices.Solution: Delete all devices registered under that customer account, then ask them to re-enter their phone number on the device they want to use for the subscription.Steps:
Locate the customer account
Go to their device list
Delete all registered devices for that customer
Instruct the customer to enter their phone number again on the device they wish to connect with
The customer can now redeem the voucher on the correct device
Deleting devices will disconnect any active connections. Advise the customer before proceeding.