Yeah this really screwed us in the sim league. We had all our data on there. Rules/draft order/etc. Luckily 99% of us are in a slack forum and we have some info in google docs and are able to pull much of it off cached pages (which is very time consuming).
I don't know if the powers that be who pulled the plug are clueless or if they just dont care but this really hurts a lot of fans. Shutting down the forums is one thing but to just do it with no warning is a whole nother. Inept on and off the field.