This is currently not possible. You need to get custom coding for that. If you want to hire us you can do so via www.fancyproductdesigner.com/customization-request
I would also like to see this functionality.
I'm not sure it makes sense to charge for a space when many customers may not consider this a character, rather the lack of one.
You can also open a topic in our feature request forum so we can keep it in mind for further updates. https://support.fancyproductdesigner.com/support/discussions/forums/5000217737
Damian K
Hello,
I'm wondering if it is possible to setup Fancy Product Designer Pricing plugin to avoid spaces and question marks from price calculating.
I do not want to charge for spaces.