Unable to follow instructions in Power BI Lab - no account details available

I have also connected my certification profile to my MS learn profile (I think). To do so I have started registering for an exam and then saved the progress. I now have a certification profile ID which is linked to this account. Still, there are now account details anywhere to be found. I have no idea where they are supposed to be coming from.
The instruction just says "Enter the account details provided to you". It seems whoever wrote this, presumes I have signed up somewhere/been signed up by someone which provided account details to me to continue. I have no idea where those should come from.

A little addition:
The first issue I've had with this was in https://learn.microsoft.com/en-us/training/modules/visuals-power-bi/8-lab (a few before, in the same module). What I noticed there initially (I just logged in with my Uni credentials) that the screenshots (https://github.com/MicrosoftLearning/PL-300-Microsoft-Power-BI-Data-Analyst/blob/Main/Instructions/Linked_image_Files/07-design-report-in-power-bi-desktop_image102.png, https://github.com/MicrosoftLearning/PL-300-Microsoft-Power-BI-Data-Analyst/blob/Main/Instructions/Linked_image_Files/07-design-report-in-power-bi-desktop_image103.png) seem to be outdated. My web interface doesn't look quite similar, however I can navigate to the admin portal, no problem (see no. 2). But all those option that are visible in no.2 are not available to me.