Nice site, it has potential if at least one person is actively developing it.

Here are a few suggestions to improve your site:

1. Enable https on your site. This is very important to build trust with users and search engines. From what I know Google gives a low search score to non-https websites.

2. Find someone that knows english well (punctuation also) to do a proof read of your website and point out inconsistencies. I found quite a few without looking for them.

3. See that your site has the language setting set to english by default. Chrome asks me if I want to translate Polish, but the site is in english. You have to define that in your HTML properly.

4. Contact us seems to be empty, put at least a small text and a email address or a google forms link.

Keep at it and it might get popular, after that you can easily make money with ads or affiliate marketing.

Take care