Neat concept! I kept getting stuck in the tutorial (focus stuck on the battle review section). Rerolling and not doing the tutorial got me by that.
Good job making a game that connects to the internet, that takes infra to set up! I like you can keep a character rolling, though requiring email and password for a jam game is a hard sell for some. I think basics all look to be there, but once I ran out of turns I quickly didn't have much to do. I also didn't seem to be accumulating turn points if I closed out the game and reconnected.
I would say there is a lot of information going on in the game and that makes it bit difficult to grasp the first couple of times through. I just followed the tips until I had stuff happening.
Tooltips and context boxes for each tile type and UI element will be essential for a game like this. I know you don't have them just yet, but when I went to try to test hovering the top bar or side bars it would scroll the map. I would try and bind this to something like right click and hold or middle mouse button hold and drag to move the map instead of screen edge detection would be finicky once you add tool tips.
I think you have bones for something interesting, but keep iterating!