Hola! So, there are 2 different encodings of your public key. There’s the one that starts with npub and is called bech32 encoding. Then there’s the hex version. So your hex version is 4cfd02fbafa82ea6099d1e9812e5e088edb46ea4689cd239687d870899c89d1e . If you paste that into nostrplebs.com it should work for you!
Discussion
It looks like you did sign up for Bitcoin-101@no.str.cr as well with the same pub key. But It doesn’t look like you ever broadcasted that update to your profile. The last profile update on your public key that I can see is from October 16 2022 (https://www.nostr.guru/p/4cfd02fbafa82ea6099d1e9812e5e088edb46ea4689cd239687d870899c89d1e)
Thank you. 🤝