How do I use third party apps without being blocked on snapchat? I used third party apps to upload?

... from my gallery to my story on snapchat and my account got blocked. I see celebrities posting on their story pictures from their gallery and Im w

... from my gallery to my story on snapchat and my account got blocked. I see celebrities posting on their story pictures from their gallery and I'm wondering if there's a way I could do that. Thanks

or:... from my gallery to my story on snapchat and my account got blocked. I see celebrities posting on their story pictures from their gallery and I'm wondering if there's a way I could do that. Thanks

Tags:gallery,account,celebrities,apps,