I'm receiving most text messages as would be expected, but it would seem one person in particular is unable to reach me. I am receiving the messages. I have the notifications telling me that I have unread messages, but when I look for their conversation, it does not exist. I was able to confirm the messages belong to them by adding them as a priority sender. A notification number was attached to their picture.
Now, I do not have this person on any sort of block list, I've check all of those, and there seems to be no reason that I shouldn't be seeing messages. This is on a Samsung Galaxy S6 Edge Plus, running Android 6.0.1 stock.
EDIT: As additional information, the message do appear on my Samsung Gear S2.
Any advice as to how I can access these messages would be most appreciated.