Mx-880 remotes have choice of Listen & Watch, where the mx-810, not programmable with CCP software, has Devices & Activities. What does your remote have?

To get from main Watch page to the first page of a device there has to be jump macro program to each device, if you erased the macro completely you won't be able to open the device. So there will be M on every device no matter if you program a macro yourself or not, because there has to be one to open the device.