As an outcome and learning from the work done:
- Design and optimisation of websites with large amounts of information, ease of visualisation, ease of reading and design of search engines (related article by Torres Burriel).
- Study of payment processes and how these processes can be simplified to make it easier for users.
As a recommendation, to provide more security in the payment process, I would include the payment within the process, according to articles and studies, users are suspicious when they leave the flow.