I dont yet have a solo 4k but one thing you need to try and find out is if th cam is running. 1, have to set the cam runnnig from the softcam menu?
2, where you pasted your config into oscam.server there will be a file called oscam.config, use dcc to view whats in that file, in there there will be something about the webif. In mine it looks like this
[webif]
httpport = 83
httphelplang = de
httprefresh = 10
httppollrefresh = 10
where it says httpport 83 you then can enter this in your computers browser just like cccam. example 192.168.1.124:83 (or what ever your http in the webif is)
See whats going on it may be the that the cams not running.