Schedule Refresh Not working

I have to excel workbooks("starts" and "Alias List" )in One Drive. I have imported both the workbooks into power bi desktop and merged both tables as i need alias names from Alias list onto Starts. After merging, i created reports and published to power bi online/service. Now, i am not able to schedule refresh and the error i am experiencing is "The Credentials are Invalid" but i am using the same credentials as i did to import the workbooks. Moreover, the credentials invalid is showing to only one work book. When i tried editing the credentials it gives me a pop up that i should have https. while my file is already https. Please help me , why i am getting this error? can't i schedule refresh for both workbooks?

Thanks in advance!