I have found out that some companies will prevent their staff from checking email on Verizon’s website on their network. They either cause the login page to give numerous errors or will be completely hidden from the page. So far, I have found a few workaround solutions for it.
You may not know this but there is a espanol.verizon.com section on Verizon’s website and my tests have show that most System Administrators do not know it is there to block or they do in fact know and leave it untouched as they themselves have a Verizon account and need to check email from time to time without lifting the restriction. Not to worry, your emails will not get converted to Spanish but the prompts you see to get to your email will be in Spanish.
Another login page that will work as well especially for those who can not decipher Spanish is fiostrending.verizon.com.