Userpilot sends data using a web-socket connection. This issue is most likely due to blockage caused by a content security policy(CSP) – some networks block the web-socket connection. This can be fixed by asking your engineering team to whitelist Userpilot on your domain.  Also, we recommend checking our Userpilot’s developer docs to understand what goes in and out of a client’s network. You’ll need to ensure that your policy allows Userpilot.js requests: 
style-src    'self' https://*.userpilot.io https://fonts.gstatic.com https://fonts.googleapis.com 'unsafe-inline';
script-src   'self' https://*.userpilot.io 'unsafe-inline';
img-src      'self' https://*.userpilot.io;
connect-src  https://*.userpilot.io *.userpilot.io wss:;
Use below for more detailed whitelisting 
connect-src:
 https://uploads.userpilot.io
 https://api.userpilot.io
 wss://api.userpilot.io
 https://find.userpilot.io
 https://find-x.userpilot.io
 https://find-y.userpilot.io
 https://find-z.userpilot.io
 https://find-w.userpilot.io
 wss://analytex.userpilot.io
 wss://analytex-us.userpilot.io
 wss://analytex-eu.userpilot.io
 wss://analytex-in.userpilot.io
 https://analytex.userpilot.io
 https://analytex-us.userpilot.io
 https://analytex-eu.userpilot.io
 https://analytex-in.userpilot.io
 https://reporting.userpilot.io
 wss://reporting.userpilot.io
 https://playground.userpilot.io

font-src
 https://fonts.googleapis.com
 https://fonts.gstatic.com
 https://fonts.userpilot.io

media-src
 https://js.userpilot.io

img-src
 https://media.userpilot.io
 https://uploads.userpilot.io
 https://gifs.userpilot.io
 https://videos.userpilot.io

script-src:
 https://js.userpilot.io
 https://deploy.userpilot.io

style-src:
 'unsafe-inline'

​
Using the Nonce Attribute in CSP Rules for Userpilot

When applying Content Security Policy (CSP) rules, the use of 'unsafe-inline' and 'unsafe-eval' is not required if you use the nonce attribute. This ensures that only scripts and styles explicitly marked with the correct nonce can execute, improving security. To enable this with Userpilot, you must pass the nonce attribute when defining the userpilotSettings object. CSP Rule Example 
default-src * 'self' 'nonce-i9o9123rlm';
style-src 'self' 'nonce-i9o9123rlm';
Userpilot Setup 
window.userpilotSettings = {
   token: "YOUR_USERPILOT_TOKEN",
   nonce: "i9o9123rlm" // This should match the nonce value defined in your CSP rules
};
By ensuring that the nonce value in your CSP matches the one passed to Userpilot, you allow Userpilot scripts to run safely without needing in your policy.