The terminal is not showing and I cannot type/write any code. What may be the problem?
Can you tell us which challenge you are on?
Have you tried using a different browser or laptop?
Please also post a screenshot if you are unable to solve the issue by trying a different browser.
It could be your browser has some extensions installed that are preventing the page from displaying correctly. I would try a different (new) browser to check.
Edit: also try some of the cat photo steps to see if they are okay or not.