Morning Larry,
Axis History Forum seems to be still working fine for me, at
https://forum.axishistory.com/index.php. There is a post noting that they have been ironing out a few log-in bugs in recent days, so that might be the issue. It has worked fine for me in the last few weeks.
Cheers,
Andrew A.
Air War Publications -
www.airwarpublications.com/earticles