Q: in regards to open website

Try to reset Safari settings:

1.Open Safari

2. Click on Safari menu at the top(to the right from the Apple logo)

3. Select preferences/privacy tab

4. Click on Remove all website data

5. Close Safari.

Delete Safari cache files:

1. Click on finder

2. Look for GO menu at the top

3. click on GO and hold down the option key. This will show user library folder.

4. Click on Library and look for Caches folder

5. In caches folder open com.apple.Safari folder

6. Move to trash Cache.db file.

What happens when you try to load the sites?

Safari - Unsupported third-party add-ons may cause Safari to unexpectedly quit or have performance issues

Safari doesn't load a page or webpage items are missing

Safari/other browsers – Website not loading