any contact at mycheckfree.com

i am using both ffox 59.01 and chrome 65.0.3325.162 on latest macos high sierra. i am trying to connect to mycheckfree.com ffox and chrome are offering sha1 and then puking when the site selects it. clearly ffox and chrome should not do this. but also, mycheckfree should not be selecting sha1. and i can't see their web site to get a support contact. randy