This is what it said:

Hey Michelle, take your email address out of your profile. That's a big security risk. That's not an email address field. Although it looks like an email it's not, it's a #nostr address.

You can get a free nostr address to use from nostrcheck.me

Go there and sign up for a free nostr address, also called a NiP-05 address and put it in the field in your profile where you currently have your email address.