Ad platforms will not touch crypto, but they happily take Visa and Mastercard. A virtual card closes that gap for you: load it with crypto, then plug the card into the ad account like any ordinary payment method.
Why one card per ad account wins
Platforms bill on thresholds and will slam an account into pause the second a charge bounces. Give every account its own card with its own ceiling, and a single stalled payment never spreads across your other accounts or clients.
Picking the right ceiling
Push each card limit a touch above the account budget. Google and friends can bill slightly past a daily budget on heavy days, and threshold charges can land with zero warning, so a small cushion keeps the account from freezing up.
Killing declines before they start
Most declines trace back to a country mismatch between the billing profile and the card, or a limit sitting below the threshold charge. Issue the card in your billing country and keep the ceiling above the threshold. Done.
Staying in command
When a campaign wraps, freeze or delete the card. That shuts down any trailing charge and keeps your spend reporting spotless, since every card points to exactly one account.