Thanks for your comments and we’re glad to know that you liked the design of our plugin.
Coming to the concerns that you raised – on fields and headings not showing in front end, paragraph field not working with Cyrillic letters -as these are actually the basic features of the plugin these were already tested and ensured the smooth functioning before the plugin was uploaded, we’re afraid something might have gone wrong while you’ve installed this plugin.
However, we did have a detailed look once again after your comment, but still couldn’t find any issues. Please see the screenshots.
https://prnt.sc/ptpj39
https://prnt.sc/ptpiqm
And also have a look at our demo https://wcfe-free.demo.acowebs.com/checkout/?add-to-cart=32
We still believe the plugin should work fine in your website and we’d be happy to assist you on this, if any help is required from our end for the same.