I sent about 10 DOGX to this exchange but it never arrived. There's a bunch of warnings there about including some extra code but I couldn't figure out how to do it properly. I guess I must have done it incorrectly. I would say, it's a pretty shitty exchange to be requiring something no other exchanges ask for.

The developers of the DOGX and the Dogecoin are different groups of people.
DOGX developers remain anonymous and I get the sense that they are located in Ukraine or Russia.
Their English is also very poor and because of that, the roll out of this coin has been a disaster.
However, I like DOGX...it's simple to mine because of the low difficulty and I think it could have a great potential if the developers would better communicate and market this project.

I'm solo mining with a 1080 and NOW I'm solving about 20 blocks per 24 hrs. 

DOGX DEVS have made it hard to promote DOGX because of the way they rolled out this project. They need to be completely honest about what they're doing. I think this coin has the potential to be great but DOGX has upset the Dogecoin community because of the things that they have said. I think the DOGX community should hire a PR firm. This was a disaster of a rollout.

I'm solving about 5 to 6 blocks a day solo mining so far. I realize this coin could go nowhere as with so many others out there but it is pretty cool to actually solve blocks solo mining. It's oddly satisfying...

I wish you guys were much more open and transparent because you're sketchy af!
Who are the Devs?
Give us some information on who's running things.

Is the snapshot finished?
What's your current status?
I'm concerned that your project is losing momentum because of your lack of clear communication.
Just my feedback.