Link not updating on mobile devices

I have an app that our users use on both mobile and desktop. It’s setup to redirect to a mobile version page if a mobile device is used. I recently made an update to an external link listed on both the mobile and desktop pages. Before publishing, I tested both pages on the web browser. For the mobile site, I also tested it on Firefox’s responsive design mode using the iPhone user agent. The link was changed, worked successfully and so I pushed it to production.

However, all of our users are reporting that the link doesn’t work correctly when using an actual mobile device. Sure enough, the link is going to the previous release’s destination which is no longer value–but only when using an actual mobile device.

Here’s what I’ve already tried and verified:

  • Tested on an iPhone. Multiple Browsers, cleared cache, restarted phone etc.
  • Confirmed that the exact same address (i.e. not a previous test version) is being used on the phone and while testing in the browser.
  • Redployed the changes on bubble multiple times over multiple days.

I cannot understand how the mobile site can load the link correctly when using the browser vs using a phone. To be sure the mobile and desktop site look very different. Unfortunately there is quite a bit of sensitive information as this is an internal tool, so I’m not able to share the site directly here.

Any thoughts on other things I should be checking?