Noob with wifi problems

Hi guys, just trying to set up volumio for the first time, absolutely no experience with neither Volumio nor Raspberry.
I can’t seem to get the wifi to work as it’s supposed to do. Running the latest version (1.55) and it works just fine if I keep network cable plugged in. On the network page I can see that wifi connection is working, I can even disconnect the internet cable and it still works, but, if I start it up without the cable then I cant get to the ui, doesn’t load at all. From the dongle it looks like it’s connected though. Any suggestions?
Cheers, Mikael