A society of your typical beings from beyond the veil of reality have recently encountered the bounderies of the realm humans call home. They studied our universe, via their own incomprehensible equivalent to what we call science and eventually learned how to generate a nightmarish portal (fueled by the screams of never born children) between their dimension and ours.
One side of the portal happens to have been tethered to a smallpreviously insignificant asteroid located between Mars and Earth. The portal is small and extremely unlikely to be spotted by humans. The eldritch abominations can see us just fine however, and though, even after extensive observation, they still don't really understand our way of life or the way we think and percieve the world, they gradually do start to "understand" that humans are suffering and require help (in the same way that you can "understand" that a bee repeatedly bumping into a window "wants" to go outside).
As they are not malevolent, they try to communicate with us and aid us, but each attempt simply ends up in a cult, a bunch of dead/insane people and the remains of a couple dead shoggoths being studied in some human lab somewhere (before the scientists inexplicably and inevitably go crazy and blow up their entire research facility along with themselves, of course).
The uncanny horrors soon realize that our reality seems to be bound by some sort of framework, some overarching rules that the locals apparently call "logic" and "reason". Unfortunately, by their very nature (and by the very nature of anything else from the nightmare domain), these horrors seem to disrupt, corrupt and utterly destroy any semblance of the notion just by their mere presence. Our reality is simply too fragile. Even the space around the portal they set up is becoming increasingly unstable and is now prone to sporadically erupting with tentacles, 19-sided triangles and angry gramophones.
Accounting for the fact that the literally mind-destroying influence they tend to have on our world is completely unintentional and uncontrollable: what methods could this species use to help (and optionally interact with) humanity in as broad a sense as possible?