Help with Connect to a SharePoint List (Power Query)

Hi all,

When trying to connecting to an online SharePoint list in excel it gives me the option to use Anonymous, Windows or Organizational account. I mistakenly chose Anonymous and got this error: Unable to Connect - We encountered an error while trying to connect. Details: "Access to the resource is forbidden." 

When I try to go back to connect using Organisational account, it skips that option and goes straight to the above error.