If you need to submit additional documents to your application you should not make a new online application and upload the documents. By doing so you will create two separate applications and delay your assessment.
If you have received an e-mail with a request for additional documents, please answer the e-mail and attach the documents, in pdf-format. You can not submit your documents via file storage services like Google Drive.
You can also submit the additional documents with ordinary postal service to:
Universitets- och högskolerådet
Box 450 93
SE-104 30 Stockholm
Don't forget to mark with your registration number.