Beacon does not display in preview mode

Some incorrect Visibility Rules that are commonly used, are as follows:

• Adding URL Equals instead of Contains: When you use equals as a condition instead of contains, the Beacon is displayed only when the URL is exactly the same as entered. If the URL is even slightly different, the Beacon is not displayed on the page.
  

• Selecting the rule as URL Path and adding the domain name, which is the value for URL Hostname: When a domain name is added instead of the URL Path, the rule is not evaluated and the Beacon is not displayed.
  For example, in the following URL adding ap17.lightning.force.com as URL path instead of /lightning.
  URL: https://ap17.lightning.force.com/lightning/#lead/list?filterName=Recent

  

  For more information, see Visibility and Display Rule conditions.

• If you are adding more than one Visibility Rule, ensure that the right operator is used.
  a. Use the And operator if the Beacon needs to be shown only when all the conditions are evaluated as true.
  b. Use the Or operator if the Beacon should be shown when any one of the conditions is evaluated as true.