Rocket League not correct name displayed

I normally go by the name Marmeduuk but for s short period I went by “Help me win this” But last week I changed it back to Marmeduuk. Yet still after this time it has not been updated on the website. Can this be fixed please?

P.S. I also put the name Marmeduuk to my alt during this time so no one could steal it when I wanted to change back