How to cancel your Dropbox Plus/Professional subscription in Washington, District of Columbia. District of Columbia's CPPA + Auto-Renewal Protections protects you.
Method: Dropbox website
District of Columbia's CPPA + Auto-Renewal Protections (D.C. Code § 28-3901) gives Washington residents specific cancellation protections.
SubScrub auto-cites D.C. Code § 28-3901 for Washington residents