@yukka

If you find a puzzle, the original of which will be uploaded a square picture or photo, the new version of the smallest size will be 3x3. Checked just now, downloading a picture "for themselves". So You can do this too - load "for themselves" any square pictures that, in Your opinion, will be of interest to the child. But it seems to me that 4x3 - fairly easy size for the kids, my 3 year old granddaughter are safely collected. And in the catalog we have many interesting and beautiful pictures for kids.

Выбираете нужный пазл, жмёте "Выбрать размер и тип пазла":

Затем выбираете нужный размер и очертания, жмёте "Играть":

Вот Ваш пазл в размере 3х3:


Только такие картинки не подходят для каталога, т. к. здесь очень много однотонного фона, что не подходит для создания головоломок.

And I can't even understand what you're trying to do , or you have a glitch or you've already collected. Puzzle of the same size can be build only once..
For children we have a selection
https://en.grandgames.net/puzzle/tags/мультики

https://en.grandgames.net/puzzle/tags/forkids

what you downloaded , is unlikely to appeal to children and this picture is not suitable for puzzles

according to statistics , you a puzzle size 3x3 gathered 12.29