It seems that MyHeritage has updated their results. The regions are still the same and will be updated in 2021, but they added new ancestral groups (based on DNA matches and family trees).

Here are my results:
84% NW-Europe
* Lower Saxony, Westphalia, Overijssel, Limburg
* Holland, Utrecht, Gelderland
* Northern Germany, Poland, Czech
* (Lower Saxony)
* (NW-Germany)
16% Scandinavia