Problems with RibbonBar

Hi, I installed the RibbonBar extension but when I open the application from the IDE (VS2022) I see everything fine (see attachment), when I publish it and open the site I see it like this: http://lecce.flypuglia.it/
I tried to use the Dock property, and the Anchor, but they don’t work, I set the Autosize to false but it doesn’t work.
What can I do? Can you figure it out already like this or do I have to create a test project?
Thanks.

EDIT: I had my clients test the application on http://lecce.flypuglia.it/ and everyone sees the ribbon incorrectly like me, so it can’t be a cache problem or something else related to my computer.

I compiled with x64 and nothing changes, I updated Wisej to version 3.5.12 and, as already happened and as I already reported, nothing starts anymore. I’m stuck……

I tried with myRibbon.MinimumSize = new System.Drawing.Size(this.Width, 100); but it has no effect.

I created a new project inserting only the ribbon and I have the same problem……..