
To do that on:
Chrome:
Go to Settings → Privacy and Security → Cookies and other site data, or simply enter chrome://settings/cookies in the browser URL.
Either don't block third-party cookies or whitelist app.publer.io as shown below.

Close & reopen the extension
Safari:
Go to Safari → Preferences → Privacy.
Uncheck "Prevent cross-site tracking".
Uncheck "Block all cookies".

Close & reopen the extension.
Firefox:
Go to Preferences → Privacy & Security, or simply enter about:preferences#privacy in the browser URL.
Either don't block third-party cookies.

Or whitelist app.publer.io as shown below.


Close & reopen the extension.
Edge:
Go to Settings → Site Permissions → Cookies and site data, or simply enter edge://settings/content/cookies? in the browser URL.
Either don't block third-party cookies or whitelist app.publer.io as shown below.

Close & reopen the extension.
Opera:
Go to Preferences → Cookies and other site data under Privacy and Security, or simply enter opera://settings/cookies in the browser URL.
Either don't block third-party cookies or whitelist app.publer.io as shown below.

Close & reopen the extension.
Brave:
Go to Settings → Additional settings → Privacy and Security → Cookies and other site data, or simply enter brave://settings/cookies in the browser URL.
Either don't block third-party cookies or whitelist app.publer.io as shown below.

Close & reopen the extension.
The above steps should work for all the other browsers that are not covered in this article.
Updated on: 03 / 04 / 2022