I migrated a Pixel 4a and a Pixel 7 to Koodo on May 8th.  I added Premium Voicemnail as a feature following https://www.koodomobile.com/en/help/visual-voicemail and successfully tested it - I get voicemails delivered as audio files via MMS.  However, I cannot  access the list of voicemails that should be available via the Android Phone app under Voicemail 

On both devices, I get “Can’t activate visual voicemail”.   If I click on “Retry”, I get "Activating visual voicemail" with something about Syncing and then get “Can’t activate ...” again.  Under Phone / Settings / Voicemail,  “Change PIN” is greyed out because “Visual voicemail is not activated yet, please try again later.”  I have tried clearing the Phone cache without success.  

Are there special requirements for this Android Phone feature?    I can clear the messages by calling the Voicemail number but it would be great to manage voicemails via the Android Phone app.