andreas.allacher wrote:Which setting is it that disables the user creation on checkout?
Simply remove "account" from the subpart configuration:https://aimeos.org/docs/Configuration/Core/client/html/checkout/standard/order/standard/subparts
andreas.allacher wrote:How would one create a correct aimeos user account manually? I guess after the TYPO3 user account is created one would have to also store data accordingly in aimeos somehow?
You can use the Aimeos customer manager to add the billing and/or delivery address details to the customer account but you don't have to. If any data is missing, the customers are asked at the checkout address page for these details and they are stored automatically in their accounts.
andreas.allacher wrote:Is it allowed in Europe to automatically create a user account upon checkout? If so, I will most likely keep it.
Not sure if there's a final decision about that and it could be different in each country. It's not a marketing e-mail so it doesn't fall into this category from a juridical point of view. If want to be 100% sure, you can extend the implementation by adding a checkbox to the summary page to allow a choice for the customer. Would be a great contribution to Aimeos
andreas.allacher wrote:Is there a way to automatically add a TYPO3 frontend user group to the created frontend user? --> should be done, if the solution proposed in follow-up reply is the correct / suggested one
You've found it already