Hi Ben,
It should be possible to receive the corrections if the receiver doesn’t have a solution. However, the unit won’t be able to apply them. So I agree with Florian that it’s important to give the receiver a clear sky view first.
I also recommend that you update the Reach RS2 to the latest available firmware version. Currently, it’s 31.0. If the issue persists after that, let’s also go through the steps from this post.