The ink itself can be removed with e.g. turpentine substitute aroma-free thinner (brush cleaner) some nail polish removers.
Our label remover e-8180 also works. However, it is not suitable for large areas.
Oily products (e.g. olive oil) are suitable for very sensitive surfaces. However, this requires a lot of patience + therefore rather unsuitable for large areas.
Unfortunately we cannot judge how the surface reacts to solvents or how far the ink has penetrated the surface. In any case the compatibility with the surface should be tested beforehand.