Hi ayrinhe,
You may display the average score and the number of ratings through Options > Premium > Review statistics. If you only need the values, then we would suggest you using the “Limited” settings, as it displays both the average score and the number of votes. The “Full” settings contains a bar chart of each score given beneath the average score.
You will notice that this option displays the average score only on top of all of your reviews.
If you only need the summary only, then feel free to follow the next steps:
1) On your specific Page, put the following shortcode: [ultimate-reviews]
2) Under Premium > Summary Statistics set whether you want it Full or Limited.
3) Every page has an ID given to it. You can view it by right-clicking your page and choosing “Inspect element”. The beginning of your page should look like so:
<head> ... </head>
<body class="page page-id-X">
where X is the ID number of your specific page. Take note of the value X.
4) Under Basic > Custom CSS, put the following code:
/*Hides reviews on homepage but shows summary*/
.page-id-X .ewd-urp-review-div {display:none;}
As for the login feature, it really depends on how you believe your audience would be more comfortable reviewing your products. If the traffic of your website is brought by Facebook links and shares, then we would suggest you using Facebook. If you are already a Front-End Users plugin user as well as your customers, then we would suggest you using that login feature.
Let us know if you have additional questions ??
Best regards,