Despite the claim of processing millions of dollars, stopping the signature campaign at this time sends a
negative signal. What are the reasons that prompted you to do this if the service achieved successes by advertising here?

Pausing a sig campaign isn't a negative sign. I'd call it resource optimization. For example, if you look at Whale, you'll see that their signature campaign was paused, but the workflow structure that was set up over the past six months remains intact and is still operational. Incidentally, both Whale and Sportsbet's campaigns were paused on the same day, with the only difference being that Sportsbet's activity dropped by 80%, while Whale's activity only slightly.
At this stage, I think the same concept will be maintained with SageSwap.