Well there is your answer; installing the raw Linux binary on your Synology won’t work. You need to use the .spk (Synology PacKage) file for Roon on NAS here:
https://roononnas.org/en/synology-dsm7/
You will then also need these packages if you have any .m4a (AAC) format music:
https://johnvansickle.com/ffmpeg/
Basic guidance for installing that is in the first post on A Roon on (Synology) NAS Primer
That is the only official way to run Roon on your Synology. Please remove all other installations before doing so.