Hey, one channel is enough to receive zaps. Could you share a screenshot of the node page with us via the chat widget on support.getalby.com?

This guide might help as well to get help quickly: https://guides.getalby.com/user-guide/alby-account-and-browser-extension/alby-hub/faq-alby-hub/what-to-do-if-i-cannot-receive-a-payment