I don't think those are necessarily related sadly, As I was able to pass there before, sadly the game has become quite a mess of script, switches and variables to the point it's gotten unstable and I just don't know what to do with it anymore. The project became more than I can manage alone.
Going back after such a long time, noting makes sense anymore. I will still try but, So far I can't replicate the issue with Celeste's skills not being usable after the last trial. So I can't see what went wrong there.
I'm not surprised with how much is packed in there. I didn't know there was a strategy RPG in this as well until I got to Ostwuld. I avoided Arrowar and took the marsh area instead and had Gaia do Grunwhal for me. Not to mention the minigames scattered around and certain areas changing based on playing during the holidays, I'm not surprised if all these variables somehow unintentionally affect each other.
Still, despite the issues I had, I got through the game. And redid the final area multiple times to get both the neutral and pure endings. And I'm looking forward to starting another playthrough from the beginning. This game is fun, and I can't give enough admiration and praise to you for making this project a reality.
Thank you! I'm glad you had fun with the game despite its flaws, I've still been messing around with switches and other triggers to try and get to the root of the issues but so far no luck, I kinda hope that by some miracle I will find out what caused them so I can hopefully create a fix! I know it's a free game but I would like for it to not be a total mess~ At least I learned a lot making this.