Websites not opening in Safari

I don't know for you — and I'm a kind of complaining — but this morning I felt like Safari doesn't work for more and more websites.

Yesterday I was with a site with a form to record my company on... nothing looked to work. No message. No clue. No indication about the blocking. I try 2 times from scratch. Same. I changed navigator (Opera or DuckDuckGo, don't remember). The form worked normally.

Today morning I was with a site with an uploading ID Card service to confirm you identity on a collective action... nothing looked to work. Same no clue, no indication... just the page like frozen. I try 2 times from scratch. Same. I changed navigator (Opera), it worked normally.

I'm sure I'm not alone.

Maybe there is reason... crosstracking blocking stuff... popup block stuff... private proxy stuff... I don't now. But why there are no clues or messages of what happens?

[Re-Titled by Moderator]