How do I know when my website is expired?

You can see the exact expiration date of your website in the CRM (how do I get into the CRM?) ,under expiration date (in red). After this date the website needs to be renewed in order to keep running.  

Additionally the EXAI system will send you an automatic mail, notifying you that your website is about to expire. If you check your mail regularly then you will know when your website expires.