Thanks for the additional info, if I had to guess our mail provider is rejecting your email because something about the reputation or the configuration is marking it as suspicious.
In the future we’ll add widget on-site to create a support ticket so this won’t be an issue. Sorry for the trouble!
Regarding your sale, I don’t see any issues with it. It should be in rotation with all our other sales. There are quite a few going on right now, so space is limited.