Hey bbacle,YES, I still have this issue.Hey guys!
We put out another fix for the marketplace so please let us know if you have any issues checking out now.
I have tried 3 different browsers and get the same error: "Only alphanumeric characters, spaces and dashes are allowed."
can you please write an email to marketplace[at]cryengine.com explaining the details of the error (step-by-step advise how to reproduce it)? Ideally, use the same email address you are registered with here on the page so our colleagues in customer support can easily find your account.