hotfix: use signup embed

[jsjoeio]

• fix: check for error in CTA
• fix: wrap error
• fix: add iframe signup

I forgot I'd lose API access after the free trial ended. Pinged the team to ask for access. This is a hotfix in the meantime.

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Name	Status	Preview	Comments	Updated (UTC)
speak-argentinian-spanish	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 8, 2023 3:17pm