You get 14 days of every feature, no card required. When the trial ends your workspace switches to read-only, so nothing is deleted.

Yes. Upgrades apply immediately and are prorated. Downgrades take effect at your next renewal.

Your workspace stays available to export for 60 days after cancelling, then it is permanently deleted.

Everything is encrypted in transit and at rest, with single sign-on and two-factor authentication on all plans.