If your settings on the telephone system do not match any of your profiles, one-X Portal will show you as being set to a profile called Detected. This profile will contain your current settings read from the phone system.
The Detected profile can reappear even after you have selected an active profile. When you select a profile to be active, that profile's settings are applied to your settings on the telephone system. However many of those settings can also be changed using other methods such as dialing short codes. If you do that, your telephone system settings no longer match your profile and so you are changed back to the Detected profile.
one-X Portal loads your voicemail settings when you login. If you then change your voicemail settings using another method, such as through your phone, the details held by one-X Portal can be incorrect. If you make voicemail setting changes through a method other than one-X Portal, you should log out of one-X Portal and log in again.