Hello @rob2k88,
Thanks for reaching out! Even though the request I shared was originally from 2021, it was recently updated to include the OnePay URL. Which directs to the OnePay website here: https://www.onepay.com/
I would suggest voting for and following the missing financial institution request I shared if you are also looking for OnePay to be added to Quicken Simplifi, as we will be sure to post updates there if we hear anything.
I hope this helps clear up any confusion.
-Coach Jon