If the domain (which you want to park) is already hosted in someone else SEDO account, than you will not be able to host the same domain in your own SEDO account.
You need to contact SEDO Customer Support from SEDO,com
Move your cursor on ABOUT US button and select the second option CONTACT US and let them know your problem/query.
And i think this is the only way to contact SEDO regarding queries which you mentioned.
Hi coooldude,
I apologize for the issues you've been having. Our customer support team should have received all of your inquiries. However, if you'd like, feel free to PM me your Sedo login name so that I can look into this situation for you.
Thanks,
Monica