Do you have a caching plugin? If you do, what happens when clear it?
We also noticed that you have a jQuery missing error:
ytprefs.min.js?ver=13.4.3:2 Uncaught ReferenceError: jQuery is not defined
at ytprefs.min.js?ver=13.4.3:2
on this page: https://comunidadeiage.com.br/videos/
Did you uncheck the jQuery option in the performance tab of the plugin? If so, please check it and refresh cache.
Do you have a picture of how the responsive videos on your smartphone are presented on the website?
Here was 4 columns very small, the best would be the break of these lines or columns.
https://comunidadeiage.com.br/videos/
Try checking this option in the galleries tab:
Stack Thumbnails for Mobile: Check this option to responsively stack thumbnails on smaller screens, for the grid layout.
Did you try that setting?