[Support request] KK Star Rating Plug In

I installed and activated the plug in kk satr rating in order the stars ratings appear in the google results as a rich snippets, but for long ago it does not work, inside the plug in i used this j-son code:

{
“@context”: “https://schema.org/”,
“@type”: “service”,
“name”: “[1Global Translators]”,
“aggregateRating”: {
“@type”: “AggregateRating”,
“ratingValue”: “[score]”,
“bestRating”: “[best]”,
“ratingCount”: “[5]”
}
}

But when i activate this option for the rich snippeds, google search console show this errors:

Major Critical Issues*
The object type of the field “itemReviewed” is invalid

The name of the reviewed item is missing

There is an invalid integer in the “ratingCount” property

Major Non-Critical Issues‡
Rating scale could not be determined

There is an invalid integer in the “ratingCount” property

I also have tried to update the plugin since a long ago but when i did, the plug in erased all the ratings that the pages and post had until the updated.

So, i think thatb maybe there is a conflict with the theme or maybe the json code is incorrect.

What can i do?

Thanks in advance,

Andrés