I’ve investigated more in depth the issue and I’m happy to announce you we found the issue.
First of all, you need to mount the eos filesystem to a location not in your home or scratch as they aren’t standard filesystems.
Second things, we had to create three directories to host the cache with correct rights as if those directories doesn’t exists, they are created automatically with the user/group of the first user running the command to mount the filesystem.
it isn’t working on Bamboo compute nodes yet due to firewall issue. We are awaiting a change from security team.