After resetting Trial of the Champion Heroic, I had some issues getting it to work on Normal, I unequipped and threw away the Argent Lance, re-equipped main weapon, and after a few minutes/tries of entering ToC, it allowed me to re-do the instance once. Now, I’m encountering the same issue with resetting and doing it again on Normal. This is the only way to reliably get Champion’s Seal despite it being a grindy grog for 5-10 an hour for the 1000+ required for the decade old mounts. I’m currently a Gnome rogue equipped with Legion-era Dreadblades. Not sure if that may be causing some issues.