Launching Ads Into an Existing Campaign and Ad Sets

If you already have a campaign running in Meta Ads Manager, you don't need to rebuild your campaign structure from scratch to add new creatives. Adstellar lets you drop fresh ads directly into existing ad sets — keeping all your targeting, budgets, and optimization settings exactly as they are.

This workflow is ideal when you want to test new creative variations inside ad sets that are already configured, or when you want to scale quickly without duplicating your campaign structure.

From your Adstellar dashboard, click New Campaign. This opens a fresh launch draft and brings you to the Campaign step.

At the top of the Campaign step, choose the ad account that contains your target campaign. You'll need to do this before you can browse existing campaigns.

Under Campaign type, you'll see two options — New Campaign (the default) and Existing Campaign. Click Existing Campaign.

A searchable dropdown will appear showing up to 100 campaigns created in the last 30 days. Each entry displays the campaign name and its current status (e.g., ACTIVE, PAUSED). Search and select the campaign you want to add to.

Once selected, a few things happen automatically:

You'll also see a blue info banner noting that campaign settings are inherited, and that on the next step you can choose to create new ad sets or add to existing ones.

Click Continue to Ad Sets.

On the Ad Sets step, you'll see a toggle with two options: Create New Ad Sets or Use Existing Ad Sets. Click Use Existing Ad Sets.

Adstellar fetches all eligible ad sets from your chosen campaign and displays them in a searchable, scrollable list. Only ad sets with a status of Active, Paused, or In Process are shown — deleted or archived ad sets are filtered out automatically.

Each ad set in the list shows its name, status, and daily budget (if one is set).

Click any ad set to select it (a purple checkbox appears and the row highlights), and click again to deselect. You can select as many ad sets as you need — there's no limit. A counter below the list tracks how many you've chosen.

When you're ready, click Continue to Ads.

The Ads step works exactly the same way regardless of whether you're using existing or new ad sets. Here you'll build the creatives that get published into each of your selected ad sets:

One thing to keep in mind: Adstellar creates one ad for every combination of your creative variations across every selected ad set.

So if you have 2 images and 3 headlines (6 creative variations) and you've selected 4 ad sets, you'll end up with 24 ads total. Factor this in when working with a lot of variations or ad sets.

Click Continue to Review when you're done.

The Review step gives you a full summary before anything goes live. You'll see a header confirming how many ads are being published and into which campaign, a breakdown of each selected ad set and how many creative variations are being added to it, and a list of validation checks confirming that all required elements are in place — ad account, existing campaign, at least one ad set, configured creative templates, and an assigned Facebook Page.

If anything is missing, you'll see error messages with direct links to fix each issue.

The publish button will read "Publish X Ads to Y Existing Ad Sets".

When you click it, Adstellar skips campaign and ad set creation entirely, uploads your creative assets to Meta, and creates each ad inside its corresponding ad set.

All new ads are created in a paused state, giving you a chance to review everything in Meta Ads Manager before turning them on. You'll be redirected to the Launches page where you can track the progress of your publish job in real time.

If any individual ad fails — due to a policy issue or rate limit, for example — Adstellar automatically retries up to 3 times. Any ads that still fail are clearly marked with details on what went wrong.

Campaign recency — The dropdown only shows campaigns created in the last 30 days. If you don't see your campaign, it may fall outside that window.

Ad set eligibility — Only ad sets with a status of Active, Paused, or In Process appear. Deleted and archived ad sets are excluded.

Inherited settings — When using existing ad sets, all targeting, budgets, scheduling, and optimization settings carry over from Meta automatically. There's nothing to reconfigure in Adstellar.

Creative combinations — Total ads = (creative variations) × (selected ad sets). Keep this in mind if you're working with many variables.

Meta's 50-ad limit — Meta caps ad sets at 50 ads each. Adstellar checks this before publishing and warns you if you'd exceed the limit.

Ads launch paused — New ads always start paused so you can review them before going live.

I don't see my campaign in the dropdown. Double-check that you've selected the correct ad account. The campaign also needs to have been created within the last 30 days to appear.

No ad sets are showing after I select a campaign. This usually means all ad sets in that campaign are deleted or archived. Only Active, Paused, and In Process ad sets are displayed.

Some ads failed to publish. Adstellar retries transient errors (like rate limits) up to 3 times automatically. If an ad still fails, check the error details on the Launches page — it's typically a policy violation or an issue with the creative asset itself.