(1) Unless otherwise provided, it is not permissible to deviate from the provisions of this Subtitle to the detriment of the payment service user.
(2) In the cases governed by section 675d (6) sentence 1 nos. 1 and 2
1. section 675s (1), section 675t (2), section 675x (1), section 675y (1) to (4), as well as section 675z sentence 3 are not to be applied;
2. it is permissible in all other cases to deviate from the provisions of this Subtitle to the detriment of the payment service user.
(3) For payments not effected in euros, the payment service user and their payment service provider may agree that section 675t (1) sentence 3 and subsection (2) is not to be applied as a whole or in part.
(4) If the payment service user is not a consumer, the parties may agree that section 675d subsection (1) to (5), section 675f (5) sentence 2, sections 675g, 675h, 675j (2), sections 675p as well as sections 675v to 676, are not to be applied as a whole or in part; they may also agree time-limits other than those provided for in section 676b (2) and (4).