is there a way to change the position and design of the add conversation button ? I inspected the code and changed some css variables then tried to save those changements in the stylesheet file of the bot, if i reload the page , those changements are gone, so is there a way to make this interface looking better ?

Hi, you can have a look at the documentation to see what customizations and styling is available https://botpress.com/docs/cloud/webchat-customization/overview/ Typically end users should not be able to start a new conversation via that screen, it's more for builders testing their bot