There are currently a number of smaller retirement providers that use Schwab solutions:
https://www.schwabrt.com/
To access the accounts, they all use a similar URL template of:
https://xxx.retirement.schwabrt.com/participant/
Where "xxx" is a 3-character code for each retirement providers
My company used Chernoff Diamond, so their URL is:
https://cnd.retirement.schwabrt.com/participant/
I've tried all the Schwab account integrations and they don't seemt to work.
Has anyone had any success connected to these types of accounts?