One address for all enquiries. Below is which body each question belongs to, so that a letter reaches the right place at once.
Some functions have been delegated to separate organisations, so enquiries about accreditation and about register entries do not go to the Association. If in doubt, write to the general address and the enquiry will be passed on.
These details are published openly: a body that sets requirements for the transparency of others is obliged to be transparent itself.
Accreditation and the register sit outside the Association by design. These organisations have their own contacts and their own procedure for handling enquiries.