On Access scanning Exclusions

Hi

I am running SEC 5.2.2 on a windows domain. On our terminal server we have Sophos End Point Security and Control 10.3. We are having an issue when the terminal server users want to upload files to a website called wetransfer. For some reason on access scanning stops the file from being uploaded to the website. Once i disable the on access scanning it works fine. Is there some way i can allow an exclusion so that i can enable on access scanning and they can still upload the files to the website.

I did have a thought of creating a folder on the server and excluding that folder from on access scanning but would prefer not to do it that way

Any help would be appreciated

John