Yes, I personally think DD-Audio is one of the best sellers on AE, you can msg Lillian and ask about your order, she replies very quick. Its a fairly new store, I've ordered 5-6 different items from them and never had any issues, so I can vouch for them. I got my k3 Pro from them, Came with a silver cable and a mic cable, 2 Filters, and everything else, and it sounds Amazing, No issues with the mmcx whatsoever. I received my order in 3 weeks.
The new packaging without the R is not fake, DD-Audio source it directly from magaosi and they're authorized dealers, they even sent me their official distribution certificate.
This is what they sent me after I inquired about this (R) issue, they're also in contact with Magaosi to clarify this confusion:
Hope this helps, I'm quite satisfied with my purchase.