I am having this same issue with my own account. I play on an android and have been for awhile. My game is updated as can be, but I have never been able to login to my account.
Ape Apps, LLC is an independent software development company founded in 2010 by Brandon Stecklein. Over the years, Ape Apps has published over 400 apps and games across various platforms. You can get in touch with Brandon on Twitter or by leaving a post on his wall @bastecklein