Glitch at sr-50

So i was trying to rank up from sr-49 to sr-50 today. I was completing the monthly challenge to do this, since the game before i ranked up, and completed the challenge, i had 10,630 exp left until sr-50. I completed the challenge and ranked up. Then i checked my specializations, since i had been eyeing rogue for a while, and because i had purchased the limited edition of the game. When i got to the specializations page, the game only showed wetworks and operator as availiable. Frustrated, i saw no other way but to restart the game, and have the game check my dlc. I did so, and all specializations were available, but then the game deranked me to sr-49 again. Back to 10,630 exp to sr-50. I played a round of spartan ops, partially because i was tired of war games for the day, and in a deluded hope that it was just a glitch and i would recieve the exp from the last game i played along with the exp from spartan ops after completing the mission. That failed. And now im stuck with the monthly done, a ton of exp gained, but lost to nothing. 343, why did this have to happen. And can anyone tell me if this is just a glitch and will fix when the playlists update? Has anyone else suffered from this?

I even equipped the last stand stance before restarting the game. When i came back, i had the default stance. I even got reset here!

Edit: apparently, i kept my stance on the website, but in game, im still sr-49