Datum Admin Username (not able to access “clients”)

Hello. Me again. I’ve seen 1 or 2 threads on this topic. It’s perplexing. I cannot access “Clients” on datum user interface. I’ve set my password. But I’ve tried every instance of a user name without avail. For example, I’ve tried the Bitcoin address, Admin, admin, 23334, 23335, 7152, and even the name I’ve created for my miners. Nothing works. Any input? Any suggestions? Thank you for your guidance.