Google rich snippet (stars on google listing)

Hello

We have our website listed on page one in google for a number of keywords. Our domain has a high authority and also has been registered for about 6 or 7 years.

For some reason we are not able to get the stars showing up with our SERPS.

We use wordpress and have tried a number of plugins.

Im looking for someone that can do some tricks to get my stars showing in google on my results asap.

If you believe you can do this please contact me