If you have the NDI part in the config file then you use the NDI consumer which is work with is recomended.
If you have the “newtek-ivga” part in config then you use a older system which is not supported with NDI4 and you have to do a “work around” to get it to work.
If youre running on a laptop it can be a performance issue.
I would recommend to either install rrebuffos CasparCG Laucher and run the diagnose window, either from the laucher or in the server window just write “diag”.
Usually I run a file called GO1080p25.mp4 looped to check that my hardware is working OK. Thats a SVT-file that was included in older versions of the server (for example 2.0.7).