Was a new user created in your account and the activation link has expired? 😰
Don't fret, as an admin of the account you may resend the activation link without contacting the Technical Support. 😃🎉
In the Manager, under the Administration, then on Users, click on the new user created to edit and a new window will pop-up.
On the bottom left, there is an option to Resend activation email. 📩