Having an advertising account blocked is one of the most common and painful problems in digital marketing. Losing access to your account means a halt in traffic, a disruption to the sales funnel, and direct financial losses. This is especially acute in niches with increased attention from advertising networks: finance, cryptocurrency, Nutra, dating, and other sensitive verticals. Below is a detailed practical guide that will help you understand what to do if your account is blocked, minimize the risk of further sanctions, and build a more stable operating model in the future.