If you have CSPs on your website then they may block the functionality of Cobrowse.io. When a CSP is blocking Cobrowse.io, then there will be an error in the javascript console stating "Refused to connect to https://cobrowse.io/..." because it violates the document's Content Security Policy.
Please follow our documentation on how to resolve this issue: https://docs.cobrowse.io/sdk-installation/web#content-security-policies-csps.
Please reach out to us at hello@cobrowse.io if you have any questions!