Safari not loading several websites where Chrome is OK

Hi,

I have a long term problem with Safari 17.5 (19618.2.12.11.6) on MacOS / Macbook Pro, which does not load several websites where e.g. Safari on iPhone or Chrome have no problem.

I already tested all recommendations about setting in Security, Privacy, anonymous window, turn on JS, disable all extensions etc.

Do you have same issue with this website? How to analyse the source issue.

Thank you.

[Edited by Moderator]