Hi, sorry to hear that. You can contact me via discord @rahisaurus or at rahisaurus@gmail.com to share more details.
If your friend is using the Linux version, spout2 support isn't there yet (and won't be until spout2 offer it themselves) - but on windows, see if the different architecture builds (RahiTuber.exe and RahiTuber_64.exe) have different results? Maybe it has to match whatever architecture OBS is using.