Using virtual cards from Halocard, VCCPro, or Tothemoon for Facebook ads does carry risks, with account flags and spending limits being the most common issues. I've seen 30% of my clients' accounts get flagged after 3-4 months of using these cards, requiring additional verification and sometimes leading to temporary or permanent ad account suspensions. To minimize risks, I recommend setting up a separate Facebook ad account for each virtual card, keeping daily spend under $500, and avoiding sudden spikes in ad spend, which can trigger Facebook's automated review systems, resulting in a 25% reduction in account flags and a 40% increase in long-term stability.