App, alerts and account
My history doesn't go back very far
How far back you can look is the difference between Cloud Basic and Cloud Pro. Outages are not the cause — those sync gap-free.
Live readings, local alerts, presets and custom settings are Cloud Basic, and they are yours for the life of the device at no cost. Unlimited history, remote alerts and trend reports are Cloud Pro — included for two years with the Founders Edition.
So a history that stops short is usually the tier, not a fault.
It is not the outage
If your Wi-Fi went down, that gap is not why. Tali keeps measuring and storing locally with no network at all, and when the connection returns the whole period syncs — gap-free, in order, as though nothing happened.
It is not a new phone either
Your devices, zones and history belong to your account, not your handset. Sign in on a new phone and everything is there.
If a specific stretch really is missing
That is worth reporting. Tell us the zone and the dates and we will look.