We have one of the basic plug and play Roku devices. I believe 3900R. I got it from a promotion a certain tobacco company was running. Anyway, we finally got decent enough internet to stream so I hooked it up, no issues. Updated to latest software, all other apps working fine. I added Max and went to log in. It only gave me the option of using email and password, no qr code. So I enter info, but before I could finish entering my wife's email, it pops up saying can't enter the same characters multiple times. Wife has a yahoo email and the only thing I can figure is because it is yahoo.com, I haven't a clue. It allows me to enter the password but then says email entered is incorrect. We have it on our tablets as well as another smart TV in house. Any ideas on a solution?