If certain operations such as HP Recovery with Dragon's Cure Pot, Spirit Attack, Divine Beast Resonance do not work or occur, they may be sealed by your equipped “Stratagem”.
Please go to "Battle Flag" menu > "Battle Preparation" > "Set Stratagems" to confirm the current "Stratagem Effect".
*"Stratagem" system was added in the update ver. 1.300, which was delivered on Dec. 12, 2023.