HTTP response code - 520

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1

:rocket: 2026 Updates: Deprecated PayPal IPNs & Native Checkouts

Changes & Current Status:

  • In this 2020 thread, users running the legacy Funnelish ClickFunnels plugin received “HTTP 520” errors from PayPal. This was caused by routing drops to manual Instant Payment Notification (IPN) URLs (e.g., https://app.community.funnelish.com/apps/``...).

  • This legacy workflow and manual IPN configuration are completely deprecated. Today, Funnelish is a standalone platform that handles PayPal checkouts natively without relying on error-prone manual IPN links.

Up-to-Date Information for PayPal Integrations: You no longer need to paste Funnelish IPN URLs into your PayPal account settings to track sales. Here is how PayPal synchronization works securely today:

1. Use Native Funnelish Pay: Instead of using legacy plugins, you process payments directly through the native Funnelish Pay integration.

  • Ensure the Funnelish Pay app is toggled on in your workspace’s global Apps menu.

  • Open your funnel page in the visual editor and click on your Payment Form element.

  • In the left settings panel, click Edit payment options, then click Add a new payment method and select PayPal.

2. Secure API Sync: When you connect PayPal natively via Funnelish Pay, order data, upsells, and subscriptions are synchronized automatically using PayPal’s modern APIs. You will not experience 520 IPN errors, and you can safely ignore legacy IPN settings in your PayPal dashboard.

Related Articles & Resources:

We are seeing intermittent paypal IPN responses coming back 520.
This has been happening since Friday.

Anyone else seeing this

2

Can you please provide more details?! where do you see those errors? and what platform/apps are you using…etc…etc we need details to be able to help!

3

Hi Samantha … they went away for a while so I just assumed it was a dns or routing issue.
but they have returned.

They are intermittent and not on all sales

we are using clickfunnels and Paypal app

we are seeing them in our " Instant Payment Notification (IPN) history"

copy of message from PayPal

Please check your server that handles PayPal Instant Payment Notifications (IPN). Instant Payment Notifications sent to the following URL(s) are failing:

https://app.community.funnelish.com/apps/api/v1/ipn

If you do not recognize this URL, you may be using a service provider that is using IPN on your behalf. Please contact your service provider with the above information. If this problem continues, IPNs may be disabled for your account.

Thank you for your prompt attention to this issue.

Yours sincerely,

PayPal

Errors type (on the history page in paypal)

Notification URL: https://app.community.funnelish.com/apps/api/v1/ipn

HTTP response code: 520

Delivery status: Retrying

No. of retries: 13

Thanks for your help

1 Like
4

@michael77 Oh those notifications you can safely ignore them, we still have no idea why they are happening but seems they are not affecting anything for the time being. Or, just start using Funnelish Pay.