Hi Roman,
Thanks for leaving your feedback. Would you be able to please let me know what issues you had with the interface? I’d be happy to explain anything that might have been unclear.
And, if you had any issues with setting the plugin up, or adding FAQs to your site, I can definitely help with that as well.
There is a walk-through that should run on plugin activation, which helps you create your first FAQs and also an FAQ page. Did this run for you? If not, let me know, and I can tell you how to make it run again.
Also, just in case you didn’t come across it, we have a full documentation site, which explains how to use the interface and get everything set up for your FAQs. You can view it here: https://doc.etoilewebdesign.com/plugins/ultimate-faq/user/