There is always a delay of a few hours while the API updates with all of the GAC results from the week. Updating individual player data is generally pretty easy, as it's a small thing to pull, but GAC results come from every single player that has done a single battle during the week, which is a lot of data to pull at once.
As a side note, SWGOH.gg is a 3rd party tool that no official developers can actually help you with as they don't run it. If you have any questions I would recommend the official SWGOH.gg discord server where you can talk to the website developers yourself https://discord.gg/rhjdfAGZx
