Hello,
Thanks for getting in touch with us.
The preview of your rich data needs to be added in accordance with the Google guidelines which suggest that a webmaster should show the schema to the users as well as to the bots.
If you show it to just the bots, you run the risk of getting removed from the rich snippets program. That is the reason it should be added to the frontend.
With that said, you can check if the snippets are properly added using Structured data testing tool: https://search.google.com/structured-data/testing-tool/u/0/
Hope that helps and please do not hesitate to let us know if you need our assistance with anything else.
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.