Unable to set up account.

Created extranet account.   But after closing for the night, I get an error message whenever I try to continue. My listing states an “unexpected error occurred.”   it also states it looks like the link to your registration is expired and does not recognize my email.

Also, since the account is not yet set up, there is no way for me to reach out to customer service. As I do not yet have an inbox.

I would appreciate somebody reaching out to me…. 
Or does anybody have a phone number that I may call to get help with this issue?

PS i have multiple listings that I would like to get transferred over from Air bnb.