A key feature for Opmetrix is that it works offline - without being connected to the internet. However, in order to keep your App working fast, there are limits to how far back you can go with offline history for call notes. Typically this is the last 15 call notes per customer.
If you want to access more call notes, tap the Sync icon in the lower left corner in call notes when you are online and Opmetrix will fetch the last 100 call notes and photos.
It only takes a second or two and when complete you will see a small tick. The call note history for this customer stays on the device until you complete your next full sync.
If you are offline, the Sync icon will be greyed out or you will see a X when you try to access more history. Get online and try again.