I Think I have found problem.
I remembered that on very very very rare occasions I find that downloading or accessing some web pages does not occur while using Firefox. Must be something to do with privacy and/or security settings I have made in Firefox or Firefox has built into it.
This may be as on one forum I regularly post on I have to disable a privacy setting to login. BTW I did disable all my privacy addons in firefox before making above post, but no avail though, so it is not privacy addons I use.
Anyway, using Internet explorer has allowed me to gain access to above download page and I have managed to download and install epic games launcher. My IE has no settings beyond defaults as I never, except on these very very very rare occations use it… So this may be problem has. He may have privacy or security settings or something else defined in his browser, or it is browser that he is using that “What is Unreal” login and download page does not like.
Well I will now go and instal unreal engine now. Hope there are not any of download issues I have read that some others have had. limit of my permitted download allocation is only enough for one attempt without risk of running out before my monthly quota is renewed
All best.