This site is maintained by Andrew Villarrubia, an L2 Judge from US-South. The CR diffs used to be Yawgatog's project, but they stopped with Ixalan; I'm picking it up with their blessing.
If you find a bug, I would strongly prefer you open an issue on Github.
Otherwise -- for suggestions, more general feedback, etc -- reach out on Twitter @villawhatever, IRC (Volo on EFNet and freenode), or e-mail me through JudgeApps.
This site is in no way affiliated with Hasbro, Inc., Wizards of the Coast, or any of its properties.