Might be fixed already actually? Looks like 0.6.3b is released without patchnotes. Downloading now to see if its actually fixed but the patchnotes in the discord make it seem like it.
It's from the devs broken update I believe. They broke the game recently and took out the ability to input assets personally. It should be fixed at some point whenever they feel like the one person spam messaging them is punished enough(assumption).
0.6.3 is unplayable right now as you can only find the one halloween signal and the dev made le haha funny by releasing 0.6.3a which just breaks the game even more, intentionally for whatever reason. Patch coming tommorrow I think?