Keep syncing after imported collection contains more than 1000 requests

Hi,

I tried to import large collection (more than 1000 requests) via json file, although itโ€™s succeed on my local Postman app, it keep syncing and never stop, sometime it even becomes offline and I need to reconnect again.

I also check my Workspace page, and the imported collection cannot be found there but only my local machine, and if I try to publish doc for this collection, I will get 403 error:

You do not have permission to perform this action. You must have edit access in order to publish a collection.

Could anyone help?