I'm hoping no one else runs into this issue, but if so, here's my journey:
I never tried on an actual computer - these were all on my phone. Over the last couple of weeks, I had tried on my own wifi, a friend's wifi, cellular data, and nothing worked. Chrome incognito worked the first few days that everything else was not, but then it eventually quit also. I just downloaded the Firefox app, and it is working this morning to get caught up on the last several days' worth of codes! Thank you both - I love my Disboards friends!