Compatibility with all themes is impossible, because they are too many, but generally if themes are developed according to WordPress guidelines, YITH plugins are compatible with them.
Yet, we can grant compatibility with themes developed by YITH, because they are constantly updated and tested with our plugins. Sometimes, especially when new versions are released, it might only require some time for them to be all updated, but you can be sure that they will be tested and will be working in a few days.
Yes. This plugin uses Gutenberg block editor to buid slides. You can use all blocks inside them.
Yes. You can use WooCommerce elements inside it and you can place sliders in product pages and WooCommerce related pages.