The default look back window for attributing view-through sales in a retargeting campaign on the platform is maximum 15 days. Google Analytics does not track view-through conversions and does not have default cross-device tracking. So this means your dashboard in SourceKnowledge will not match up to GA. You may have many vendors participating in the conversion and in order to counter this, you can set a high RoAS in your retargeting campaign. If you require a stricter lookback window, please contact customer support.