The latest version v1.7.4 of the CE was published today. As explained in the associated merge request, we have changed the way that the authentication and authorization system works between the Calculation Engine and the forum.
TL;DR: Most people should not notice any difference, but if you are unable to use the CE after logging in, please post your problem in this category so we can quickly fix it. Do not email or message me directly.
Details for nerds 
: Previously the CE used the email address associated with your identity provider (IdP) to query the forum to verify your membership in the @ce-users group. In rare cases, this would fail because 
someone’s primary email preference on the forum might not match the one from their IdP. Now we are doing the account association properly by using the unique user ID generated by our central identity server (Keycloak), so you should be free to set whatever primary email you wish for forum communications.