User can’t login

Hello,

I have used the Members PlugIn to create a members only page on website. I created a role ‘Member’ which can read pages and have restricted access on the page https://blackfordfiddlegroup.org.uk/members-area. The User which has a member role cannot login. No error message is displayed. The login box is just re-displayed. Previously this was working fine.I am sure the password is correct.

Any help please?

The page I need help with: [log in to see the link]