Webstories is a feature that we rarely offer, as it is not a fully rolled-out product. This is not something that we can fully support at this time, which is why we recommend against its use unless the publisher is willing to take full control of the webstories system and its customization.
If you have not already done so, a good first step would be to remove the webstories code, then proceed to clear the cache of your webstories.
I am truly sorry if you are displeased by our answers, but we do not have specific support for webstories at this time and make clear warnings before its implementation.