The November update to My Store Locator Plus® includes a patch for the location sensor feature, available to Professional and Enterprise level users.    The feature auto-detects a user’s location when they visit your web page where you have embedded your MySLP map.

MySLP Location Sensor Settings
MySLP Location Sensor Settings

This feature stopped working recently due to changes that came online when updates to the JavaScript frameworks we use to deploy the MySLP technology.   MySLP Users that have location sensor enabled under Store Locator Plus® | General | User Interface may have encountered issues with the map not rendering.   The November update will resolve that issue.