How to update to messenger on instagram

Hello humans of,
I have been having issues with getting instagram updated to messanger on my account. I have done lots of googling and there is supposed to be something in settings that says "update to messenger" or something of the sorts, and it works. Only problem is, it doesn't show up at all and even searching for it doesn't work. Instagram won't take my calls unfortunately, so does anyone know of a way to fix this?

System Configuration: Windows / Chrome 87.0.4280.88