Decimals not working

Hi
I do not understand why decimals do not work anymore, in previous days they worked fine. Maybe it’s due to updating to the new version of wp or woocommerce.
When I put any decimal number in the minimum or step quantity and try to save it a popup appears saying that it`s not valid and to choose between the closest values.
Help please.

The page I need help with: [log in to see the link]