Valid Email with Hyphenated domain

We’ve got some users that we’ve migrated and some that we’ve created directly from the auth0 dashboard. However, the user cannot get the Password Reset to work because it says that their email is invalid.
Their email is formatted like so: firstname.lastname@9-email.com
From what I’ve seen so far, Auth0 was last cited as using the isEmail package to validate emails, is that still the case, and is there a workaround that we can use to allow this user to have their email recognized?

I have the same issue, @kkim do you find any workaround