Yes, i have the same problem. Plugin was broken in 2.8.5 and it still broken in 2.8.6
In the settings of the plugin i see PHP code in inputs instead the string that should be in the inputs.
For example: In: “URL for your members page” in the input to the right i see this: <?=$o['url'];?>
, In the “Meta fields to search by” in the input to the right i see this: <?=$o['meta'];?>