Recently, Chase made some changes to the way they export QIF files from their online banking website. Unfortunately, these changes have, in some cases, altered the formatting so Banktivity can no longer properly parse the transactions within the file. Therefore, the file may not import into your account in Banktivity.
***Thankfully, Chase provides other files types for export that are supported with Banktivity. You could use QFX, CSV, or OFX instead of the QIF option. ***