Perhaps you should slow down and think about your purchase more before making them from now on. You were buying left and right along with asking about should you buy 5-6 , etc. maybe you should slow down a bit and get to know the stores/sites that you are preordering from along with proxies and their policy. Most pre orders are around 6 months away, so you should plan for possible delay and which store you trust with your money. If you feel any doubt , then just don't preorder from them.
I do not see Fromjapan doing anything wrong here, do you expect them to ask Arcadia, "hey ,your preorder is delayed , can you refund all my preorder so I can preorder again?"
Are you thinking they will screw you over just because it's over 6 months? or maybe Fromjapan is thinking the same thing " now that it's over 180 day, we don't have to worry about SQIDD trying to do a paypal charge back after receiving the item or possible other false claims. . kinda works both ways.
Perhaps its also time for you to look at other preorders that you placed that will be reaching 6 month on their planned release date
dx vf-1 missile set reissue (June release)
dx-vf-1 Strike / Super Parts Set (April release)
maybe the METAL COMPOSITE Wing Gundam Snow White Prelude too since it's 2nd batch release is in June.
I have no issue with fromJapan and their services. But if you are uncomfortable then just do what you have to do.