I was trying to install node-red on my pi also in IoBrocker too. After the installation I should open my Browser type in the Ip from my Raspberry+ the :1880 port-number. But what i could see was only a white screen and on top left side the Nod-red logo. Please can I get some help from you guys.
Welcome to the forums @Giorgio454
I have removed the function-node tag - as its not a question about the Function Node.
Unless I'm mis-reading - but I'll assume you have installed a Plug-in that offers Node RED functionality in IO.Broker.
As with most 3rd party implementations, the behaviour of Node RED is heavily modified - to the point, support is better found amongst the community that governs these implementations - that's not to say we could look at the basics.
open up the Your Browsers debug panel, and pay attention to the consoles output - anything in there, that may offer some clues - Please paste the output?