Hey Lauren. Thanks for the heads up on this; it is definitely possible there is a bug pertaining to this. We had a problem in the pre-launch QA where names with spaces didn’t import but fixed that, which should have resolved this too.
Do you have a dashed username you can share with me to test? From there, we’ll get this patched up for July’s monthly maintenance release (which will be out the first week of next month). Thanks for bringing this to our attention and my apologies for the inconvenience until this is resolved.