Thanks for your answer most of the issues were solved, although we still have some…
-The testimonial slider still not appear after the doing the correction you point to us.
-The color of the progress bar now is always the default color they show in the revelance preview page.
-Attach you´ll find some print screens with the tabs issue.
The problem we have with the favicon image is that we already have one but we want to change it, so we go to site identity and select the new one click on save and publish but nothing happen it always shows the old image, we even try to delete the image and let the field blank.
Thanks again for your help.