📌 Magento 2 also has an importation limit of 300 orders at the time. You can select "Imports orders from the last "n" days" on the connection module (from Marketplaces > Edit).
If you keep having import issues, we suggest selecting 7 days.
If this detail is changed, the orders will still be imported chronologically.
Don't worry! Here ShippyPro comes in your help.💡
You can still ship all your older orders through Manual Shipment, detailed steps are explained in the link below: