If you have Vividi Plus subscription, you can upgrade to Vividi Premium within the app.
Visit the in-app store to see the benefits of Vividi Premium and upgrade.
iOS users:
You will be charged for Vividi Premium immediately once you request an upgrade. Apple should issue a refund for the remaining time that you had left on Vividi Plus.
For more information about the billing, please visit [Apple Support].
Android users:
Changes to your subscription will take effect immediately after you request an upgrade. The renewal term of your existing subscription will be maintained and you will be charged the difference between the subscriptions on a prorated basis.
For more information on the billing, please visit [Google Play Help Center].