After the account is set up, Sellics receives or retrieves different amounts of historical data for different parts of the tool:
Sales & Profit - Full History (back to 2016)
Unless you were already selling before 2016, Sellics is able to retrieve all historical sales history via Amazon's MWS API.
PPC Manager - 2 Months
Via Amazon's Advertising API Sellics will receive 2 months of historical data.
Reviews - No Limit
Sellics will retrieve all historical reviews for all "Monitored Products" in the Cockpit.
Keyword Rankings - No Historical Data
There is no historical data for keyword rankings. Sellics will only be able to start assembling this data after the monitoring for a product and its keyword rankings was started.
Spy - No Historical Data
In general there is no historical data of competitor sales. If a product was previously monitored by other customers though, Sellics will be able to show sales for these specific timeframes.
Please note: Moving forward the data is stored, so the history available will increase each day.
There is currently no way to actively pull more historical data in any of these features.