crossi10 Hi
It's due to the significant changes in API of X (Twitter), you can find more details in this discussion: https://devcommunity.x.com/t/v1-1-api-no-longer-working/199890
You will need to pay for using the new API: https://developer.x.com/en/docs/twitter-api/getting-started/about-twitter-api
Another solution is that you can use Embedded timeline widgets: https://help.x.com/en/using-x/embed-x-feed
Regards