Is ot maybe possible to install a 3rdparty browser? On the ipad or Chromebook?
Found this for old ipad. You may also be able to install other browsers.
Download & install Google Chrome - iPhone & iPad - Google Chrome Help.
Here is a link for Chromebook that may help.
But agreed it us unfortunate to not have proper backwards compatibility with older devices. Wonder if maybe a plugin could be made to address this with special use cases like yours.