The 2 places I would start looking into are
1- the theme settings in Customizer specifically the woo commerce pages options and check if Astra theme assigns a different header for the woo commerce pages
2- Check if you created a custom header from Elementor
From your shared site link, it seems the header comes from the Astra header builder, and a transparent header is applied for other pages, but, not for your store, https://d.pr/v/JleEmV
Please check the header builder settings, and apply the same header for your stores and related pages.
Also, you may post your query, in Astra theme support forum (https://projectdmc.org/support/theme/astra/) I think they will help here more specifically.
Cheers!
Hey @amin7 thank you for the reply! How would i go about changing the header settings to the store and product pages? I have already set the transparent header to be enabled on the entire site: https://prnt.sc/GBd7ebEGbGZz