Refine password prompt for plan access

[Alain-L]

Current:
“This plan is protected by a password.”

Proposed:
“This plan is protected. Please enter the password to view its details:”
“This plan is protected. Please enter its password to view the details:”
“This plan is protected. Please enter its password to unlock:”
“This plan is protected. Please enter password to view its details:”

This is to improve clarity and tone.