As part of the site update all player's boards were set to the largest available size (the new "Standard" ).
This appears to have upset many who believe the board is too big, so a one time operation has set all boards at this size to the size below - "small".
If you actually selected "Standard" by choice, please do so again to return to the larger board, and sorry for the inconvenience.
The old sizes map the new size as follows :
Current "Standard" size is a new larger size. This did not exist before.
Current "Small" = "Large" on old site.
Current "Mini" = "Standard" on the old site.
The smaller sizes are not playable options anymore, but are used for showing mini-boards around the site.