VRM on Laptop not showing installation

Hello community,
I have a Cerbo GX with a bunch of MPPT controllers as well as a MUltiplus 2 installed on our boat. Everything worked (and still works) without problems, including display etc.
BUT: As of yesterday the installation vanishedd from the VRM - meaning logging in with the laptop I don’t see the installation. Tried to add it again but that simply won’t load.
I know, sounds like a connectivity issue, but the weird thing is on the VRM app on the phone everything works just fine…
Any thoughts/ideas on where the issue might be?
Just updated the Cerbo to the latest version now, hoping this would solve the issue but also no. I can access the Cerbo directly via the wifi, but I love the VRM for the readout of all the data…
Thank you already for all idedas!

If you open a browser on your phone and go directly to:

Then log in, what happens?

Do you see your installation in the VRM?

If so, this would point to a laptop, browser issue.