To fix the endpoint error:
- Log in to your Salesforce instance by removing everything after .com in your Simpplr url and hitting the Enter key. Once in Salesforce, click Setup at the top.
- Type installed packages into the Quick Find box and click Installed Packages. Find and click Simpplr.
- Navigate to Post Install Instructions and click View.
- Scroll down to Additional Instructions, and below the Simpplr app, select Click here. Then click Save on the Remote Site Edit page.