Same issue, Zenelith seal progress locked, on 1.6.9-3 on Android. Just installed it off itch.io three or four days ago.
Edit: ignore me, I see 1.6.9.6 is available now, updating.
I just started a new game and fiddled with the difficulty of my first enemy on the quest where I need to defeat 0-1 two times. However, now all enemies have permanent Heavy Stance so I cant harm them, and I cant disable that from the difficulty menus because its locked to Adventurer Level 2, buts locked as enabled.
Did I miss something or is this a bug? The Heavy isnt going away after 1 turn like its supposed to, so theyre just permanently invincible.
I had already done so to the end. What I needed to do was visit their mansion on the weekend.
The character cards said I had reached the end of what was in this version of the game, but I still couldnt buy the college - seems the character card tooltip is just a little behind on reflecting the actual content. Super fucking stoked on this game rn, 10/10.
Thanks so much for your help! :D :D