Login Doesn't Work On Windows Download But Works Online

I downloaded the app for windows on my computer without creating a login. I later created a login on the website(which works when I log in online) but for some reason, it doesn’t work when I try to log in to sync on my computer(which uses widows) and my phone (which uses apple play store). I have changed the email and the password to this account 3 times. PLEASE ADVISE!!

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Moving this to help since its not a bug of the app itself.