What about liability?
The advisor promises diligent legal advice but, as with an attorney, cannot promise success in the legal outcome. The students who act as counsellors cannot be held liable to the same extent as attorneys can. Their liability for slight negligence is excluded, but they are liable for intentional and gross negligence. Please be aware that your contract is concluded with the counsellors (students) and not with the professors supporting them or their fully qualified supervisors. Therefore, no claims against these persons can exist.