Firstly, check the document on the web portal.
If it is a notice from the Lyon CROUS, your situation has to be checked with them.
If it is a different CROUS and a transfer has been completed, send us the new notice through the web portal (inscription.ec-lyon.fr or inscriptions.ec-lyon.fr/fr/ia/reinscription depending on your situation). We will then be able to check your registration with them, which should release payment.
If it is a different CROUS but the transfer has not yet been performed, check that you have carried out all necessary steps at your end. You will not receive any payment until you join the Lyon CROUS. Remember to upload onto the portal your new notice showing you are now with Lyon CROUS. This will allow us to validate payment.