You have three portals — each does a different job. Do not mix them up:
/vendor-portal/ — KIT assembly / SKU upload/supplier-po/ token page — acknowledge & report shipments/supplier-po/ token page → tick Acknowledge → after dispatch, fill carrier / tracking no. / POL / POD / ETD / ETA and save; it shows on the buyer side in real time./supplier-po/ opens directly with the token your account manager gave you; only the "Product Desk" needs WP login.vendor_id — you only see and edit your own SKUs. This is a security design./vendor-apply/ to submit your details; once your account manager approves, you can log in to the onboarding portal.