What do you have to DO to get the gold plate in the ruins of alph?

I have unlocked all the chambers and got the first 6 pages of the unown report and half of the 7th and i have caught all 26 alphabetic forms of unown. I might just not be seeing it. Is it on the place where there is a bunch of statues? I really want those Unown ! and ?.

Pleaselog inorregisterto add a comment.

In Pokémon HeartGold and SoulSilver, each slide puzzle that iscompleted unlocks a specific subset of the 26 alphabetic forms ofUnown. To unlock all 26 alphabetic forms, all four slide puzzles mustbe activated. The slide puzzles can be completed in any order; thefirst completed slide puzzle will cause a man to give the player theUnown Report. Once the first seven pages of the report are completeand the 26 alphabetic Unown forms have been caught, theentrance roomof the ruins will have a gold plate that reads “Our friends look upand heartily congratulate us”. Reading the plate causes one of theresearchers to speak to the player, after which the ! and ? forms canbe encountered in the entrance room.

Check the entrance again. It should be there after you complete the 4 puzzles and catch all 26 Unown

Source:Bulbapedia

Maybe a late answer, but I had the exact same problem and found a solution for it. So you have to collect all 26 unown and solve those puzzles and go through all secret doors, but you also have to fall in the hole of every secret door (and maybe also of the puzzles). When you’ve done that, you should talk to the top-right researcher inside the small blue building until he starts repeating his message. The golden plate should now be appearing in the main hall.