Cannot change MC username

On the minecraft page, i cannot change my minecraft profile name. i am logged into my microscoft, but under my games, when i click on  "profile name" it reloads the page and then tells me i have to buy minecraft again. but i have already purchased minecraft years ago, and can still play it now. but i cannot access my profile name or change my skin. 

Steps to Reproduce:

1. go to the minecraft website
2. login to your microscoft
3. click the "profile name" button under Minecraft: java edition

Observed Results:
after i click it, it reloads the page and either nothing changes, and i have to click it again. or it reloads the page and tells me i do not own minecraft.

Expected Results:
it should take me to the profile name options.

Screenshots/Videos attached: [please attach an image or short video]

Notes:

i apologize, for some reason you cannot see my mouse in the video but i was clicking "profile name" twice and then hovered over the "buy" button to show that now it claims i dont have it