You could use something like Greasemonkey and set up rules for that domain, though it'd be nice if this was automated from the action of deleting an element.
Write a small TamperMonkey script to fix their BS JS. That's what I did when Comcast wouldn't let me pay my bill without creating a Comcastic!!! Account. My login worked just fine, but they really wanted to block me from paying my bill until I created a separate account with their useless email features and other things for some reason. Killing some DOM elements let me pay their ransom.