I first signed into Airdroid using my Google account. This means that my e-mail address is now associated with an account at Airdroid. I want to use the Airdroid standalone program that I downloaded for Windows. However there is no option to log in using a Google account - the program accepts only Airdroid account credentials. I cannot sign up for an Airdroid account with my e-mail address because it's already registered with Airdroid via my Google account. I think this is an oversight.