The Squarespace Plugin Issue Guide
For Squarespace users dealing with broken booking forms, email not sending, or checkout plugins failing after updates. This guide explains why these issues happen and how to fix them - without needing to be "techy."
See FixesWho this is for
Squarespace site owners whose plugins stopped working, bookings won't load, or checkout and email fail after updates.
Typical problems:
Broken booking/calendar plugins
Acuity Scheduling or third-party booking add-ons can fail after Squarespace or API updates. We'll show you how to re-connect calendars and test booking flows.
Checkout failures
Stripe, PayPal, or tax/shipping extensions may clash after updates. We'll explain how to test in safe mode and isolate conflicts.
Email delivery issues
Often linked to DNS misconfiguration (missing SPF, DKIM, DMARC). We'll show how to validate DNS records and enable SMTP if needed.
API disconnections
Integrations like Mailchimp, Google Calendar, or Zapier can "lose" authorization. We'll guide you to re-authorise apps securely.
Plugin conflicts
Having multiple plugins doing the same job (like pop-ups or analytics scripts) often causes failures. We'll show how to simplify your setup.
1) Common Squarespace Plugin Issues
Booking forms not loading
Check that your calendar integration (Google, Outlook, iCal) is still connected, and clear browser/Squarespace cache.
Emails not sending
Verify DNS records (MX, SPF, DKIM, DMARC) and configure SMTP through your email provider if Squarespace defaults aren't working.
Checkout failures
Disable extra tax/shipping/payment plugins temporarily. Many issues come from outdated Stripe/PayPal integrations.
Integration disconnects
Mailchimp, Zapier, or Google integrations may require re-authorisation. Reconnect via plugin settings.
Page load or slowdown issues
Too many conflicting scripts or pop-ups can slow your site. Audit plugin usage and remove duplicates.
2) Step-by-step fixes
Update or reinstall plugins
Sometimes simply reinstalling or updating a plugin restores functionality. Always save your settings before reinstalling.
Check DNS and email records
Use tools like MXToolbox to confirm SPF, DKIM, and DMARC are valid and propagate correctly.
Test in safe mode
Squarespace safe mode (or disabling plugins manually) helps isolate which add-on causes the issue.
Re-authorise integrations
For third-party services, revoke and re-add API connections to refresh permissions securely.
Contact support
If it's a third-party plugin, Squarespace can't always help. Contact the vendor through their support channel.
Still stuck?
If your Squarespace plugins are still broken after trying these fixes, get in touch and we'll help resolve them quickly.
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