I have the same issue, has been like this for a couple of weeks. Tried different browsers etc. I emailed the email in the notification and yet to get a response.
Seems there is another thread on this here already: https://community.isc2.org/t5/Member-Support/Dashboard-Not-Working-Non-Member/m-p/26023#M5212
@Paulknight & @FirstVoid I reached out to member support and asked them to look into this for each of you.