Most problems have a quick fix. Find what you see below.
Open V4 Studio once in your WordPress admin. Activating the plugin adds nothing on its own; the first visit adds them.
Check that Elementor is active and up to date. Then read the import results for anything that was skipped.
Use a simple selector such as .class-name. IDs, element names, several selectors, nested rules, @container and @supports aren't accepted, and the results say which one it was.
Elementor couldn't take it as a setting, so V4 Studio kept it in the class's Custom CSS. Look there in the class's settings.
Edit a field that supports dynamic tags and look in the Brand Details group. Make sure Elementor is up to date.
Choose the image again in Brand Data and select Save Details. Export files don't carry images.
That's expected. V4 Studio fills in its sample values only once, on a new install.
Before a big change, export your setup from Import / Export. You can import the file to bring it back.
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Sections
Ready-made sections built with V4 Studio, to copy into your site.