How do you change your Max HP? I thought it did it automatically when you level up, but I'm not going up in HP. How do I change it permanently?

Edit Character

On Class Page is a button at top "Manage HP". Here you can input roll results and the system will automatically adjust for con mod and such.

If you level up by always "taking average", go to the home page and change Hit Point type to Fixed - it will fix HP to you always taking average and will automatically adjust whenever you level up in future.

Thanks!