This is the same problem I thought was solved but it is still happening even though your solution remains
I am able to get to the Register page via the Please Login or Register on the post. At least there is a way but then there's new issue; reCapture:
I have many times entered the keys that Google sent me days ago but today I gave up and registered again. Although I get confirmation from Google, it gives an error on the page.
I keep thinking this would be a lot easier if I started again from scratch. There are so many problems. How can I reuse the db so that I don't lose the database?
@Chris, I admire your grit but this just gets worse and worse. My earlier installs of wpForo have worked without the recapture and on Astra but we've been going round in circles for a week with no progress. Astra is looking at the side margin as it's clearly their problem but login is a nightmare. I just reentered the Google keys for the 6th time before writing this and I now see we are back to redirecting to the front page!
Astra seems to have been the problem with reCapture and with the left margin. It's running on iBusiness while the Astra guys look into it.'
Thanks a million.