Thank you for reaching out,

The black bar is called “Floating Bar.” and you can disable it from WP Dashboard > Appearance > Customizer > WooCommerce > Single Product > Display Floating Bar.

Regarding the anchor link positioning, the header you currently use is not a default header; it is sticky and overlaps the content. Perhaps you could adjust it by navigating to the Customizer > General Options > Performance > Scroll Effect— Custom Offset and setting the offset size to something like 100px.
If that doesn’t help, you must set ID 100p or 150px before the current content.

I hope it helps.
Best Regards

It is OK now.

Thanks

Hadar