I dug up a site that lists the episodes in seasons unlike on IMBD or the others I found. It appears Robert starts in the middle of season 22 and is there until the beginning of 25. I didn’t find episode names but if you message me I’ll send you the site link so you can look up his episodes by there in season numbers. 22x131 is first and he goes until 25x02 according to how IMDB and the new site line up.
Gotta deliver for my fellow Kazinsky lovers eh? (side note we need a cool code name if there isn’t already one)
UPDATE: it looks like Robs seasons aren’t actually listed on most sites. They’re not in what is available on Vodly, sidereel or let me watch this. I found a youtube Channel called EastEndersOnTV and they have it all but it;s poorly organized. it seemed to be the unfortunate best option for now though.