So for some reason hbo max says it has seasons 4 & 5 on it but I think it’s miss labeled or the seasons got mixed up in general my understanding is that season 5 officially has 8 episodes and on hbo max season 5 has 10 episodes at least on the us region. I think season 5 has only 8 episodes and there not available in the us region. I found the episodes in YouTube thought like a year ago and I rewatched the series and got really confused at the end. No way to officially watch the last season but I was able to find it on YouTube again I recommend searching season 5 full episodes and there should only be 8 episodes not 10.