Answer

  1. Log in at my.TIDAL.com. click on Subscription.
  2. Select Upgrade or Downgrade. confirm your selection.

How To Cancel Your Tidal Subscription

Everything you need to know about Tidal — in 90 seconds | Mashable

How do I change my tidal subscription?

1. Log in at my.TIDAL.com. click on Subscription.
2. Select Upgrade or Downgrade. confirm your selection.