Retirement tax questions

Looks like there was some sort of update.  Now Mint says I need to go the Principal website and update things, but when I click the 'Ok, go' link, I get 404 not found.  I looked around Principal for a link/page that allows me to configure access to 3rd party applications, thinking that is the problem, but haven't found anything.

 

So, still no connectivity to Principal as of 8/3/2023.  Did anyone else figure this out?