Unable to view older data on mobile

I have a new mobile and trying to configure the PVOutput mobile app. After entering in System ID and API, it starts to download 3300 entries but stops at about 1600. And when looking at yearly history it only goes back to mid 2018 (stem set up in 2014).
I assume this is due to Max API requests. Happy to download over time to get them all in but can’t figure out how to do this.
Any ideas?

The API has a rate limit, and resets every hour.

Yep. But if I wait an hour and hit refresh it starts refreshing all info and I get the same result