Campaigns that do not deliver after 20 hours often indicate that the account has a reliability issue or is being limited in some way, even without a clear notification. For personal accounts that have been created for a long time but have not been active, the system may assess them as lacking positive signals. Before launching a campaign, it is a good idea to restart the account by interacting lightly, setting reasonable spending limits, and double-checking the payment method. In addition, it is necessary to ensure that the ad content does not violate any of the moderation criteria, including the image, headline, and destination link. If everything is valid but still not spending, try testing a very basic campaign to determine whether the cause is the account or the content.