Adobe Animate HTML5 published web file glitching (Animate preview looks fine)

I've followed a tutorial on how to create HTML5 ads in Adobe Animate and everything has gone well up until I try to publish and view in a web browser. Everything looks correct when I preview the animation within Adobe Animate, but once I open the .html file on the web, everything is glitching. Text is flashing on and off, the placement of images is incorrect, etc. I cannot locate the issue and am totally stumped. I've attached videos of how the animation plays in Animate, and how it plays on the web. Any help is appreciated. Thank you!