Heya all!
I recently had a few issues navigating through a few sites (including Titan) where my log-in did not work on my phone. One site was a state-based agency, where inputting sensitive info was not being accepted. I had the same issue with Titan, where it wouldn't accept my user/pw.
Once on my computer, both worked fine. The common denominator was my Galaxy Note 6. For all I know, I'm the only one with the issue, but, if others are having probs, stick with your desktop.
Just a FYI.