Strange problem with translation

I need some help with the plugin. We did the translation in Bulgarian. All was working well but all of a sudden the translated string went missing. The fun part is wen we enter the elementor builder we see all the BG translations .We use ajax woocommerce filter we can change some tabs and on the main tab it`s not translated but on the outher tabs it is.</p> <p> We don`t see any errors in error.php and the only new plugin is pixel your site. When I disable pixel nothing happens. We use woodmart the same thing. Change it to Child, to normal, to wp default. The web site is https://audiobox.bg/ and any advice or assistance will be greatly appreciated.

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