I don't quite understand the question. With the right to replenishment, you have a right to vote by letting the thing be repaired by the seller, that is, letting the defect be eliminated or you get an exactly the same thing without a defect.
You can consider withdrawing from the contract as soon as there is an impossibility and the seller cannot offer you, for example, the delivery of the defect-free thing because it no longer exists.
I don't quite understand the question. With the right to replenishment, you have a right to vote by letting the thing be repaired by the seller, that is, letting the defect be eliminated or you get an exactly the same thing without a defect.
You can consider withdrawing from the contract as soon as there is an impossibility and the seller cannot offer you, for example, the delivery of the defect-free thing because it no longer exists.
▷ Subsequent performance iSd. § 439 BGH: Definition, time & purchase vs. contract of work (juraforum.de)
1 it is not, and 3 to 5 I do not get.
2 should be the correct answer.