Problem with Office 365 setup for a Windows phone

I purchased Office 365 (student) and I am having problems accessing it on my Windows cell phone. When I select Office 365 I receive a message that I must setup the program. When I enter my e-mail address I get a message that an “Account already exists” for my e-mail address on my phone. I have no desire to delete my primary e-mail account on my phone to get 365 to work correctly. Is there any way to get past Setup?

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