Gregory's Server
The Wikipedia article for Swiss associations gives some context.
«An association can serve as a non-profit organization (NPO) or non-governmental organization (NGO) and this form is used by several Swiss sections of international NGOs such as Amnesty International, and the World Wildlife Fund, by business firms (see below) or by international organizations such as the Fédération Internationale de Football Association (FIFA). The form can also be used by political parties and alliances, such as trade unions.»
https://en.m.wikipedia.org/wiki/Swiss_association
The key benefit of a Swiss associations is that it needs just two people and written articles of association. Nothing else. No sending it anywhere, no registration, nothing.
To quote the government:
«To start an association, at least two natural persons and/or legal entities are needed. No seed capital is required. It is established following an organizational meeting called to approve the association’s articles of association and to appoint its board members and auditor. The required bodies are the general assembly and the association board (at least one member).
An association is an independent legal entity. Hence, association members are not personally liable for the association’s debt.»
https://www.kmu.admin.ch/kmu/en/home/concrete-know-how/setting-up-sme/starting-business/choosing-legal-structure/associations.html
My take: It is up to your contract partners to recognize that they are dealing with an association with possibly very little liability and act accordingly.
To quote the government:
«To start an association, at least two natural persons and/or legal entities are needed. No seed capital is required. It is established following an organizational meeting called to approve the association’s articles of association and to appoint its board members and auditor. The required bodies are the general assembly and the association board (at least one member).