I know this is a known issue but I can not find a working answer anywhere so if someone can help me with this I appreciate it.

I have e emitting vellum grains source and I need ids but it does not produce it automatically, how can I add proper simple ids on this setup?

Thanks!

In sop just before your sim, try creating a detail wrangle with:
and a point wrangle with:

What Tanto said is right. Vellum Source looks at the presence of nextid detail attribute to start incrementing point ids. Unlike POP Source it does not create those attributes by default, requiring some source prep work that isn't documented well. But once detail nextid and point id attributes are present on source points everything else should work.