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It isn't appropriate to use on-line help forums designed as a safe place for people with disabilities as a resource for undergraduate dissertations.
You cannot give guarantees of confidentiality as it is an assessed piece of work with fairly open access. Even if you use codes or other names, information collated might reveal recognisable personal details or sensitive comments about services.
You should always seek permission before posting on websites - see community rules. Also your dissertation tutor should discourage this sort of activity.
You've probably gone unnoticed as this isn't a website where you are likely to find many teachers. Most users are adults with the disability or parents and carers.