a website shouldn't contain a space though, what are you trying to enter?
This is a bug in your site triggered by an incorrect <input> attribute (I don't recall the exact one, maybe "type" - but it affects which keyboard is shown by mobile browsers).
EDIT: Screenshot - https://i.ibb.co/dMm7Jpp/C48-EFAFB-C8-B2-4147-AC48-3-AC07584...