How do you use nostr? Which client? I use Primal. Some use Damus. Some use Amethyst. And there are loads of others - you need to put that npub into Alby, as far as I remember

Nos2x extension by @fiatjaf is also good https://chromewebstore.google.com/detail/nos2x/kpgefcfmnafjgpblomihpgmejjdanjjp