Get your taxes done using TurboTax

Yes, IDnotify is part of MAX Benefits.  See this FAQ, where there is a link to the IDnotify website.  In their Contact section it looks like they have a 24-hour phone number, too.

https://ttlc.intuit.com/questions/3051554-who-is-idnotify-and-what-is-their-relationship-to-turbotax