SIP2SIP

After attempting to set a very strong 99-character password with all printable characters, being told the password change was successful, and then not being able to log into http://mdns.sipthor.net/sip_settings.phtml, I tried to reset my password back to the original one (which worked fine before). I can generate password reset emails, but after the Login reminder and password reset are sent to my email address, and I reset my password, and am told "Success The password(s) have been updated", I still can't log in. There is a cryptic message like "The possibility to change the password will be active for 30 mins from 2017-07-19 15:15:20", and I don't know what that means. I tried waiting several hours, but still can't log in. Am I doing something wrong?