This is a limitation of Square’s current marketing tool right now. When you create a Facebook post through Square Marketing, it will only let you attach one image per post in that interface, so it won’t upload multiple photos like a carousel or gallery in one go.
That isn’t a Square bug — it’s just how the integrated posting feature is built at the moment. If you need multiple photos in a single Facebook post, you’d have to either:
• Post directly in Facebook/Meta instead of through Square, where you can upload multiple photos or use a carousel/album.
• Create a carousel ad in Meta Ads Manager which lets you add 2–5 images in one post/ad.
Square’s tool is great for quick single-image marketing posts, but for multi-image posts you’ll need to use Facebook’s own posting tools or ads instead.
