My homebrew creations won't save

I'm making a Homebrew monster, and for some reason, it's not saving all the changes I make.

When I tried to create a Monster from scratch, the Initiative Bonus, stats, and Passive Perception wouldn't save. After I input them, it wouldn't let me create the monster, because for some reason the stats and Passive Perception were unfilled when I pressed "Create".

Then, I tried to change an existing Monster. I was able to update its name, its actions, its AC, and its HP, but every time I pressed "Save Changes", its Initiative Bonus, stats, and Passive Perception wouldn't save, going back to what was on the original Monster.

Nevermind, fixed the problem. I just Force Quit my browser, and now everything is saving.