What are the disadvantages of WooCommerce?

As a cryptocurrency and finance practitioner, I'm curious to delve deeper into the limitations of WooCommerce. Could you elaborate on some of the key disadvantages of using this platform? For instance, I've heard about scalability issues and limited customization options. How do these affect merchants seeking to grow their online businesses? Also, what are some of the challenges related to security and payment processing that WooCommerce users might encounter? Understanding these weaknesses is crucial for businesses considering this solution.