You seem to be unfamiliar with Bitsler, but they actually make tons of announcements and promotional advertisements via tg and email and social media.
Honestly, I haven't been checking it for a while if I have to be honest. I have been here, on bitcointalk, and checking here and I haven't seen ton of announcements regarding updating the website, or anything brand new.
However, I checked and my account was deleted, so I haven't been there for a long enough time as it turns out, didn't use your ref because I already opened one before I saw your message, sorry about that :/ if I knew then I would have done that, in any case, you wouldn't really earn anything from me anyway, I do not gamble much here, I will check for a while and see if it became good enough to comeback and that's it, even if I stay, that would be like maybe 1$ per month for you at best lol.
Maybe it has been a while that we have seen bitsler in terms of sig campaign in the forum but they are active in other social media ads. Are they really deleting old accounts. I only know that you need to update your password if you have not accessed their site for so long. I don't know that they are deleting inactive accounts. And I noticed, bitsler is one of the bookies with long list when it comes to e-sports.