External translator cannot access our GroupShare UI and cannot add our GroupShare server in Studio

Hi Community,

After switching to a new computer, one of our external translators is now having issues accessing our GroupShare UI, even if the user's VPN connection is correctly established. In Studio the user likewise cannot add our GroupShare server, but keeps getting the error message "Failed to connect".

I have tested the access on a device outside of our organisation, using the user's VPN and GroupShare credentials. And it seems to be working as it is supposed to.

Are there some settings that the user should be aware of on their new computer?