Ruins of Alph HELP

[skaggeldorf]

So I caught all 26 types of Unown, I did all 8 puzzles in the 4 corners of the area (4 picture puzzles and 4 Unown writing puzzles) and then I went down all 4 holes to go into the rooms with the Unown writing on the ground. I then went back to the Research center and the scientist said there are 2 new types of Unown and then interacted with the gold plaque in the back of the main Ruins of Alph building with the ladder going down. It played the cutscene with the scientist and he took me back to the building saying I can now catch the ! and ? Unown but when I go back to the Ruins of Alph underground, nothing is spawning at all anymore. Mod Enzo said that ! and ? can only be caught in Sinnoh but I just want to make sure. Anyone know for sure?