Mac Mail

By going through the whole process these are what I get:-

If I ignore the previous one and click "Next" I can't get the blue "Done" button to work. I tried UNchecking the items, as suggested by BDAqua but still no luck.

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I've now (I think) tried everything to get Mail working, the latest is to TRY for a new Mail account from here:-

This is where it goes wrong, I just can't get a new Mail account. So what can I do now?

I've tried and these are all I get:-

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I'm going round and round with no success. I've tried two passwords - 1) that for my ISP account, which is fine, 2) my own password for my email address. As you see, the account remains CLOSED but I can't make it open.

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I've done everything as you suggest in the new account but it's all the same as my original account - none of the new messages appear.

Mail is just the same and I get the same problems if trying to set up a new Mail account.

Still no Mail!

Thanks for the info., but, it's the same as before because, after doing the macOS Recovery, the same thing happens as here (as you see, I tried it with and without a user name same password each time):-

It seem I'll have to carry on using my I.S.P. account for emails and forget all about Apple's Mail. Do you agree?

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I'm using IMAP4 PORT 993 and SMTP PORT 465. I presume by Authentication you mean a password?

I still get a failure as here:-

I just can't get it to install, so I'm still having to do emails using my I.S.P. account.

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It appears in System Preferences, Internet Accounts, then when I try to add the new account, go through the usual procedure so that Dialog appear is when the blue button won't word.

You don't show what I should uncheck. Please advise.