Hi,
I noticed the following issue with the CodeFund house ad here on meta (iPhone 8, Safari):
Looks like the css hard-codes a width there.
https://github.com/discourse/discourse-adplugin/blob/master/assets/stylesheets/adplugin.scss#L175
Fixed!
https://github.com/discourse/discourse-adplugin/commit/4991941d03f46afa551e00dda1df8ef4544bab2f