I'm having problems to get to the app. More than once I have tried to log in in the app and the URL is not working. I'm from Spain and I have tried the app at 10pm. Do you do maintenance in this hour?

Also, I'm having problems with the coding. I have tried 5 times to generate a Code and every time I receive the response of the chat, but the Canvas is empty. I use Claude 3.7 with Canvas. What could be the problem? Can I access a tutorial to check the process?