So, Autohome deserves a public shaming because they will not supply you with a $.25 part?
I had an OverCamp about 20 years ago and remember it being pretty rugged except for the part you are talking about. If I remember right, everything is designed to be repaired in the field ... anywhere, an expedition tent. There are least three work arounds that I know of. First, the eyelet should be an industry standard eyelet, so I would recommend going to a marine supply store like West Marine and bring along with the remnants of yours to matching up a replacement. Second workaround, the eyelet is pretty useless so I just drilled holes into the square steel support tubes behind the eyelets so the end of the awning supports fits snuggly, then the eyelet will just be a reinforcement. Third workaround, since the "awning" is really just the door, why not get a real awning for your OverCamp? Above your door is half a YKK #10 zipper sewn in so you can simply zip in your awning. If you can't get a zipper or awning from AutoHome, then go to an awning maker, supply store or sailmaker and show them the zipper above the door and they will make you whatever you want. You then set up the tent and zip in your awning or tent, it really is a very clever way to mount an accessory structure.
You are right about AutoHome in North America, they appear to only support their North American tents. It is a mystery to me why they don't bring in the fabric tents, Their Air Camping tent was an industry standard since the 50's. Might be wise to contact AutoHome in Italy for replacement parts if you need something special. They were nice enough to send me some parts in the Netherlands when I damaged my tent there.