Hi @Michelle3 I took a look at your account and can confirm that the user M Sumner has opted out of receiving emails of HubSpot. Can you confirm it this is the user who is having issues?
To resolve, please ask this user to find and open an email the received in the past from HubSpot before unsubsribing, in the footer they’ll be able to access a link to manage their email preferences:
If there are any other uses having difficulties please confirm their names and I will review further with HubSpot Support.