It's possible the themes related achievements are broken. There was a major update to the themes code recently and that could have caused them to stop Working. Thank you
How do you get the 3D Glasses trophy?
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Nov 9, 2023
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#24
How can I get the 3d pieces
settings(left hand side bottom),all settings,board and pieces,3D Staunton
BruhXDer wrote:
you have to pick board and pieces instead of theme after going into the settings.
this didn't work for me
Seth_Isaac wrote:
Did you remember to click "save"?
yes dude 
AerisChua wrote:
Oh nvm
did you got ?
I did it but it still did not work
It's possible the themes related achievements are broken. There was a major update to the themes code recently and that could have caused them to stop working.