Really frustrated and fed up now

'BAD REQUEST', - this is getting too much now as I can't even get on with setting up my new site! On the WordPress dashboard on a brand new site, you get the option to ''set up your home page'', along with other things such as ''write your first blog post'' etc. I am trying to o this route for the home page, as last time I did something different I somehow ended up with two home pages. But for the last week I have tried to use these links, and nearly all of them come up with 'bad request'!! I have searched others' posts and can see this has been an issue for a number of people lately, but whether Site Support realise that I do not know, as they have no issue from their end and they said to other people too. But ut's obv. not our computers if it's happening to a lot of people. I have tried teh suggestions given in those posts, delting cookies, flushing caches, etc etc, I even deleted my site and recreated it! All to no avail. Sometimes the other lnks work but teh home page one does not, no matter what I do! So, what? I can't do this site and thats it? I'm really annoyed now, because I am just wasting my time!

It's not the theme and it shouldn't be the plugins, as this is a brand new site with the standard 2 plugins, divi theme and NO content.

Also what's weird is that new WordPress doesn't list the home page under pages, that's where I'm used to seeing it, so I can't go in and edit it from there, and the theme I'm using allows you to build your content from the front end of our site as well as the back, so I tried from that side instead, except that I can't do it there either, because the visual builder will not enable on that page like it does on the samle page... as though the actual homepage is completely broken or non-existent. I tried re-installing WordPress, but that didn't work either. What the hell is wrong with it??!!

I give up.