Not getting Minecraft update

So I just found out you guys had recently sent out 1.16.3 update on September 10th. Well I have been playing Minecraft more lately because I started playing a server on Minecraft again. For some reason I am not getting the 1.16.3 update and its been 6 days. I tried uninstalling and reinstalling Minecraft. I only want to get 1.16.3 so I can get onto my realm and it won't let me since I am stuck with the 1.16.2 update for Minecraft. So please help me so I can get back on my realm so I don't have to cancel my realm.