To begin, navigate to the Toolbar > Edit with Elementor > Login popup:




Or go to Templates > Popups > Login > Edit with Elementor. Control the layout, conditions, rules and styles of the popup. 





You can find more information regarding the Login PRO Widget here: https://elementor.com/help/login-widget-pro/




The logged-in button "Go To My Account" leads to /my-account page, where you can check your orders, downloads, addresses, account details, etc.


You can check this guide for more details: https://elementor.com/help/woocommerce-my-account-widget/




Please check these guides for further information:

Read more about the Elementor Popups

Guide to Vamtam Elementor Builder




How to trigger the popup from the header button "Login"



To begin, navigate to the Toolbar > Edit with Elementor > Header - Home Modern:




Click on the "Edit" icon of the "LOGIN" button. You can edit or remove the popup connection in the Link field:



Please follow the detailed tutorial for how to "Create a Button to Trigger an Onclick Popup in Elementor" here: 

https://www.youtube.com/watch?v=-29XXbJLnQM

https://elementor.com/help/how-to-trigger-a-popup-on-a-link-click/