I can't switch to Lite Mode in DWA

When i try to switch to Lite Mode in DWA i get next Message: Delegated mail files are not supported in Lite mode ofDomino Web Access.To use this feature click OK to enter the Full mode of Domino Web Access or click Cancel to logout.

What’s to do??? How can i use Lite Mode???

Subject: Check the Mailbox Owner…

Even if you have Manager access to a Mailbox, you need to be the Mailbox owner to use Lite Mode

Subject: Victor, Thanks!!!

It helps me:)