401k provider has updated their site
My 401k provider has made some changes to their site, which I believe is now causing that account to no longer sync with mint. The url for that provider is https://www.webaccountlink.com/pcs1/.
The synchronization quit working a couple of days ago when I noticed that the site has also made some style updates to their site, which I presume also included some other changes which has broken mint's ability to synchronize. It had been working for over a year and a half.