Note: Smart Campaigns can only be created in Smart Mode. New and existing advertisers not in Smart Mode are eligible for a variety of other campaigns.
Issues with your payments, billing transfers or other account level issues can impact the performance of your account and the performance of your campaigns.
What you can do
Check your Google Ads Billing page to make sure there are no issues that would prevent the account from serving.
Need something else?
Check other common reasons why your campaign performance is fluctuating.