My send documents tab has disappeared

When logging onto my AdobeSign account this message pops up, "You are not authorized to send documents for signature. Please contact your account administrator".This is extremely frustrating because I have been sending documents for almost a year now, and suddenly my right is revoked. I currently have many contracts out for signature and I have many more that I am waiting to send. I tried resolving the problem via chat, but nothing was fixed. It has been almost a week now. I need this fixed ASAP. I am currently logged in as my colleague, because I wasn't even able to log into to start discussion. However, I have no issue with logging into my AdobeSign account. Help!