Help - can't log out of either of my ipads due to family sharing

I recently bought 2 ipads for my children to use. I do not have any other apple devices. So when I set up the family sharing and noticed that I couldn't log out of either of the kids' ipads I wasn't too worried. But then I realized that I can not delete apps or change the settings without being able to log into my Apple Id from an Apple device, which I do not have. Sadness for me --- but that seems rather not smart. Anyway - what can I do other than finding an apple device to use. Thanks in advance.