batricp, please avoid double posting, as it is against the forum rules. You can review our forum rules here. Thank you.
If you have something to add and your own post is the last one, then simply edit it.
Have you checked if the map has reloaded or if you're still on the old version of the event?
Nothing in that event can make it vanish after the first show text.
Please check again by changing the image and the text in the first show text command.
If it still displays the old text/image when you move on that event, then you need to leave and return to the map to force the game to use the new version.
if it displays the new text/image but still vanishes after first text, then you have a command affecting it from somewhere else - a set move route changing its image or a plugin or a common event messing with it, and you need to search for the other cause.