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Site URL: https://insights.homelister.com/insights//what-are-the-first-steps-in-selling-my-house

Hi all.  I added a newsletter form block to a blog website and it was initially working.  After further testing, it sends back an error message of "Unable to submit form. Please try again later."

I've deleted the newsletter form block, re-added it, checked all of the settings, but nothing is fixing this.

Can someone please help?  


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  • 2 weeks later...
  • 1 year later...

I'm having this issue too!! Am trying to reset connection as per @mav16 but there is no API key connected to Squarespace at all, (even though this exact same form has been fine and working for almost 2 years—it just suddenly started producing the error)... 

I'm trying to start over with the form and add an API key but kind find instructions anywhere; the "Connect a Newsletter Block" article doesn't mention API.   Any thoughts? 

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  • 10 months later...

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