Using another repurposing tool too
If another tool also auto-posts your TikToks, turn off the auto-posting you don't want duplicated, because EverySqueeze can't see its posts right away.
If you use other repurposing tools (for example Repurpose.io or Scaled Creator), turn off any of their auto-posting you don't want duplicated here. EverySqueeze can't see what they post right away, so the same TikTok could go out twice: once from that tool and once from EverySqueeze.
You don't have to cancel another tool. Keep it for anything EverySqueeze isn't doing for you (Amazon uploads, for example); just make sure only one of them auto-posts each video to the same Facebook Page, Instagram, YouTube channel or Pinterest account.
During setup
Right after you connect TikTok, Pip shows this note once with an Okay, I understand checkbox. Setup continues after you tick it, and it is not shown again.
In Settings
The same reminder sits behind the ? on Auto-post new TikToks in Settings → Posting schedule on your computer, and under Automatic posting in the phone app's Settings. To pause EverySqueeze while you sort this out, switch Auto-post new TikToks off; see The automatic posting switch.