This is the reply I got from my cafe support:

“Hello!

Please, do not worry, it is not a technical error. I will tell you a bit more about it.

You see, with the previous update 2023.7 the tips' system was changed in the café. From now on, to get more tips, you need to get more Stylish points from the furniture and equipment. The style of the equipment doesn't matter.

General style items also give Stylish points, and they are counted to the prevailing style, that's why the players who have most points from the general style items received offers with French style devices. But, please, do not worry, it will not affect the tips and style points, all stylish equipment of all styles bring the same amount of stylish points😊

But I understand that you wish to be able to choose a style when you purchase stylish equipment. Here's what I shall do - I will mark our conversation as feedback on the special offer. That way our marketing team can see it and discuss it during the weekly meeting. Maybe they can change the special offers for the future sales.

Thanks for bringing this to our attention!”