Yes, you can update and make changes to your campaign after it has started. PostApex allows advertisers to modify their campaign settings, creative, targeting, budget, and bid at any time through the dashboard.
It's important to note that making significant changes to a campaign, such as changing the creative or targeting parameters, may impact its performance and require some time to adjust. Advertisers should also be mindful of any ad approval processes and ensure that any changes comply with PostApex's advertising policies and guidelines.
Additionally, it's always a good practice to regularly monitor your campaign performance and make any necessary adjustments to optimize your ad spend and achieve your advertising goals.