Welcometo FT
I made Silver from Bronze on a flight from PEK-LHR and when I checked, my account was showing nil points & Avios. I called BAEC to find out why, got a satisfactory answer so I also asked how long it would take for my status to change on my BAEC home page. I can't remember what I was told but it only took another couple of days to show the nice shiny silver bits
Give them a call in a day or two if it still hasn't changed for you. I've found the staff there very helpful. You'll find the number under 'contact us' on your BAEC homepage. It might be the Bronze number initially (it was for me) but I'm sure they will help you.