how to use link.pokemon.com to link to Switch my mobile account using Trainer Club ID ?

The QR the game shows leads to the link: link.pokemon.com
which doesn't work and just shows a white screen (as of 2nd-04-2026) ofcourse tried multiple browsers and devices to enter the link
When is this going to be fixed? or is there another way to enter this site or to link my mobile account to the switch?

Thank you very much,

a dedicated gamer fan