We just released Multi Currency Addon version 2.0. Please update it on your website (WP Dashboard -> Updates; click “Check Again” if it’s not there).
Also, please disable old Stripe API usage (WP Dashboard -> Stripe Payments – Settings, “Advanced Settings” tab, uncheck “Enable Legacy Checkout API” and save changes).
Now to answer your original question. Currency select won’t display on “All products” page, it’s either displayed on each product page or you can add it on any page you like using shortcode. Let me know which suits your needs best and I’ll provide instructions.