Perspective - image disappear and chart axis bug

Hello,

with Perspective Workstation i'm sharing some carousel with

  1. an jpeg and png images that switch every 5 min. After 3 days from it's opening, the image disappear, and only the labels remains

  2. in a xy chart, after 3 days, i have problems with y axis. or some values disappear, othe they shift....

Any clue how to handle this? Any possibility to "refresh" the page?

thank