I am having the same problem logging into betacommunity.familysearch.org. I have cleared all cookies and all data. I have turned off all blockers of all kinds and I'm not on VPN. It does not accept my password (I know what it is) and there is NO reset button of any kind on that page. I have also tried multiple browsers (approved) all with the same result. I tried the help line, but stumped them. They said to post here.
At the present time, FS Beta is not available as they are doing the annual update, There is a note on the site when you try to log into the site.