You can manage your Delta subscription at any time, but where you do that depends on where you originally subscribed.
If you subscribed through Apple on iOS, you’ll find your Delta subscription in your Apple ID’s Subscriptions section. If you subscribed through Google Play, you’ll manage it in your Play Store subscription settings. These platforms control billing, trial periods, renewals, and cancellations.
If your Delta plan comes from your eToro Club membership, your access will automatically match your Club level. Changing your plan means changing your Club tier on eToro, not inside Delta.
Inside the Delta app you can still see your current plan, check your renewal date, or start an upgrade if you want to move to a higher tier or switch to annual billing.
No matter what, your data is never removed if you downgrade or cancel. Everything stays in your account and becomes visible again if you upgrade in the future.