Offline access to the Knowledge app needs to be refreshed every 90 days as a security measure.
If you currently have access to AMBOSS, but are having trouble accessing the Knowledge app, you can refresh your offline access as follows:
Tap on the app and go to Settings > Offline Access > Refresh
If your app is updated and you notice different information in your articles, then you likely have High-Yield turned on!
High-Yield is our feature that removes content that is not relevant to your Study Objective. You may have it enabled on the website or on your mobile app. To turn it on or off for your app, just select the three dots icon at the top-right of an article and then toggle the switch next to High-Yield, as shown in the screenshot below.