[sky303]

They didn't put everything from Discovery Plus on Max, which makes sense because they need something to keep Discovery Plus worth it for those that actively sought it out. There's alot of older , HGTV for example stuff on Discovery Plus. (Back when they did G programming, you know Gardening, for example) Other minor Discovery network content is on Plus too, and not on Max.

Also noticed a glitch with continue watching where, it doesn't remember where what to continue watching... hope they fix that.

I assume that 13 Ghosts being a one series wonder makes it worthless for Max.

They put that, at least in the US, on Tubi for a long time along with the original series, the new Scooby Doo mysteries and The Scooby and Scrappy show. It's also on the Boomerang pay streaming service.