Sigh. It's not really encouraging to keep hearing these kinds of feedbacks as a strider owner. My SnG has bladeplay and I've been meaning to send it in, but these experiences+living international sounds like a recipe for distaster for me.
Some options that I see are
A. You could send Josh at instagram a DM about your situation. I think it's striderknives_josh or something like that. I've had success getting a question answered through that way.
B. Log on to the USN, and send Josh or Mick a private message. Or make a post about it at their Strider sub forum. Josh and Mick often see/post there. A piece of advice though, many people there can be very defensive, so just word your post in a not whiney, where the hell is my knife I hate Strider way. (Not saying that this post was) I understand you must be pretty upset/pissed off (I would be furious... Unacceptable warranty for a 400 dollar knife) but that would just cause drama, and not aid to your situation at all.
C. My least favorite option, just wait. Many people have received knives from Strider without a notification that their knives were out. Maybe your knife is out too. Judging by your situation, I really don't think so, but who knows.
Hope this was of help. Keep us updated. I really hope you receive your knife soon.