Lyoness recently had to explain, in an Austrian Court, why they weren't a pyramid scheme.
They failed!
The court document is very long but consists of two main conclusions;
1/ The Terms and Conditions could not be read by affiliates in full before they became members, so are unfair and can't be enforced.
2/ The Lyoness member is not an entrepreneur or a business owner but a consumer with consumer rights.
But they also weren't too complimentary about Clouds!
Or Cashback World!
This is my favourite bit - enjoy!

'But the advantages of a simple membership are not attractive, even economical even considered completely uninteresting: The cashback moves in the deep single-digit percentage range and the member is even better served if it is the same negotiate a discount with a dealer of his choice. In addition, the selection of partner companies and their range of products is modest, poor, mostly only local small companies (hairdresser Susi, Gasthaus zum Kirchenwirt etc.). Often the companies don't even know anything of their luck, listed on the Lyoness website as a partner company become. In view of the doubtfulness of the business model, everyone has already agreed well-known companies distanced from Lyoness. The Lyoness Cashback Card is used by well-known companies are not accepted at all!'

The full transcript of the German document has been translated here;
TARA TALKS: Lyoness / Lyconet - Vienna Court Case, July 28th 2020