Using Edge browser i am now able to create a new username but still can't access using my Admin ID. Additionally, when selecting Reset Password no confirmation email is going to my email client. It's obviously partly a browser/cookie issue otherwise i wouldn't be able to create a new username in Edge, because i can't do this using Firefox. It's possible i am entering an incorrect Admin password, but i'm reasonably sure i'm not.
I'm thinking of trying another clean install after deleting the existing phpbb files from my server. I'll use Edge browser to go through the installation process and see if this makes any difference.
I have to say, my first experience of phpbb boards hasn't been a good one. I need a Board that is near enough 100% reliable and doesn't lose members because of basic issues such as creating a profile and logging into the Board. I was initially going to use Proboards, which is an absolute cinch to set up, less than five minutes, and has the added advantage of hosting your Board on a server completely independent of your website. However, i was put off by both the principle and the ongoing cost of having to pay to remove advertising. I'm hoping i can resolve this issue setting up my phpbb Board very soon, having already wasted several hours, otherwise i might have to look elsewhere. I'll report back after the next installation attempt.