i want to automate something which involves to first open this web page

link: https://copilot.microsoft.com/?showconv=1&showntbk=1

after that i want to click inside the first text area which is visible but i cant find its xpath or use css selector as if its invisible to program. but i can see through inspect page . but when i try to use it in chrome extension named “xpather” it does not work as if its hidden somehow even if i copy its xpath and paste in xpather its does not work.or any other isse help me please

i tried to find that element using inspect and i did find but when i try to access via xpath it says there is no result regarding that id or class.