Reeses thanks for reporting your experience, that's strange because my experience with it was very good, seemingly the opposite of yours
Definitely would be curious to know which sleeve you used - did you use the specific power blow Victoria Mouth sleeve (with the wider opening)?
I didn't actually have any of those issues, in fact the suction kept me inside the Keon, and I slipped out less because of the suction
I've never had sufficient suction previously with any of those toys with the release valves , so the suction on the power blow was notably strong at least on my unit
Did you use the rubber ring at the end cap, as well as the curved insert at the mouth end of the case?