If I activate "Bad Reaction to Simochi" and then "Gift Card", the opponent continues to gain 3000 LP when in reality he should lose them, since with "Bad Reaction to Simochi" the effects that should make the opponent gain Life Points they should lose them. Can this error be fixed? Thank you.

Bad Reaction to Simochi needs to resolve before Gift Card to work with the combo so you can either.

A: Have a Bad Reaction to Simochi resolved and on the field already and then you activate Gift Card.
B: Activate Gift Card then chain Bad Reaction to Simochi to that card. As Bad Reaction to Simochi resolves first the combo will work.

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